TBI Fuel Injection for VW Air-Cooled Engine

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Dielectric Videos

Dielectric Videos

3 жыл бұрын

In today's video, I build a throttle body injection (TBI) intake adapter for the dune buggy! The throttle body is from a Zenith carburetor. I'm currently using a MAP and RPM sensor electronic control system based on the design in a previous video of mine: • Electronic Fuel Inject...
Special thanks to نصائح و معلومات و منوعات for helping with research and development on the EFI control system! Here's his channel: / @user-vn8pv3yd3c
The latest version of the Arduino code for the ECM can be found on GitHub here: github.com/JohnPattersonConsu...
Please note that this video is purely for documentation purposes and should not be considered instructional in nature. Perform activities in this video at your own risk.
Thanks for watching DielectricVideos!

Пікірлер: 156
@davidbergmann5960
@davidbergmann5960 Жыл бұрын
I'm a 61 year old guy who has worked on Volkswagen since I got my first car at 14 I'm super impressed with this young man wow he did that fuel injection that's really cool
@martinduddridge329
@martinduddridge329 2 жыл бұрын
I like how you’ve stuck with this project and not got bored and gone with an off the shelf solution. Kudos to you.
@tompaoletti690
@tompaoletti690 2 ай бұрын
Anytime you use the word “Thus” Whoa! Great job! You should produce your own kit 👍
@DIYWilly
@DIYWilly 3 жыл бұрын
Great job so glad I found your channel. I have been looking for fuel injection for 68 1600. I probably Will not build my own throttle bodies though. But you have made it all so easy to understand. I'll be watching!!!
@blakeblake4854
@blakeblake4854 2 жыл бұрын
Well done! Keep up the good work. Looking forward to the incorporation of TPS.
@user-vn8pv3yd3c
@user-vn8pv3yd3c 3 жыл бұрын
Amazing effort and really amazing video Really worthy of appreciation and respect my friend John
@Cervan
@Cervan 2 жыл бұрын
Quick tip, when using a hole saw to try and make a large hole in a thick piece of steel, drill a couple of small holes on the perimeter of where the hole saw teeth are going to cut, it helps clear the chips out and lessens the load on the drill press slightly.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Great tip, thank you!
@WindflowPattern
@WindflowPattern 3 жыл бұрын
Hey ! Great video man, I've never had the guts to get that deep into my engine, I have a 97' Mexican Beetle, it has the 1600i engine and it runs pretty smooth, just the IAC valve give me troubles from time to time so i disconected it. Engine idles no problem. Keep the videos comin !
@reverendlawrence7584
@reverendlawrence7584 3 жыл бұрын
This is awesome you are a genius love this great job
@JMKGarage
@JMKGarage 3 жыл бұрын
Very cool what you have done there... a lot of brains and skills being put to good work 👏
@fredred8371
@fredred8371 3 жыл бұрын
you are an insperation. Keep up the awesome work!
@nullify.
@nullify. 3 жыл бұрын
That's great I'm hoping to use some of the ideas and the code here for a 350 small block (once the engine is finished).
@kit6041
@kit6041 3 жыл бұрын
This is so freaking cool, I'm thinking about putting efi on a 2L type 3 engine I'm going to put into my bus if I can rebuild this engine.
@mikedavis5784
@mikedavis5784 3 жыл бұрын
I love the simplicity of your design. Can't wait to hear how the fuel ratio table and throttle position emulator worked out. I was going to suggest moving the injectors closer to the cylinder intake ports, but if the lag and rich/lean issues can be solved without relocation, moving the injectors would likely spoil some of the simplicity. Rock on my friend!! Liked and subscribed!
@007mwn
@007mwn 2 жыл бұрын
I would suggest moving the injectors beyond the butterfly valves they may be prone to ice
@joshrandall3632
@joshrandall3632 3 жыл бұрын
This project is amazing! Also, I feel like I'm in class with the Dr. from Criminal Minds teaching me about cars.
@alvaritten6116
@alvaritten6116 2 жыл бұрын
Use a toothed wheel and a ignition coil pack, that's a huge improvement. I use a 36-1 and a GM coil, the four wire connector type
@lasersbee
@lasersbee 3 жыл бұрын
4:44... Just a suggestion... It is always beneficial to start larger drilled holes with a smaller drilled hole. The small hole will be more accurately centered and the large drill will not skate off center. Good job on the conversion
@DielectricVideos
@DielectricVideos 3 жыл бұрын
Great point, thank you!
@shotthunder7663
@shotthunder7663 2 жыл бұрын
Yeap! More easy way to do thats holes.
@chuckthebull
@chuckthebull 2 жыл бұрын
Another suggestion is slower cutting speeds..i found those large hole saws work best at slower speeds..too fast and it skips over instead of digging in and its actually faster.. this is known in the lathe world as feeds and speeds..their is a sweet spot.and the larger the tool the slower you go as the diameter changes surface speeds.and drill presses tend to drill smaller holes and are set to go fast and that compounds it with a larger cutting tool..SO the faster you go the more wear on the tool as well... carbide can go faster but tool steel needs a slower range of speeds and the right feeds.
@bobg3034
@bobg3034 Жыл бұрын
Great job!
@beatsanz
@beatsanz 3 жыл бұрын
Please give us an update of how everything is going so far. Also would like to know how you manage to pick up engine's rpm since the last video you said wasn't working well for low rpm's. What MAP are you using.... Great videos! Very inspiring and very well detailed. Also explains are so pro. Thanks
@JackLangenkamp
@JackLangenkamp 2 жыл бұрын
Well done video my friend
@limabravo6065
@limabravo6065 Ай бұрын
Oh if you ever go to welding on anything galvanized, grab some muriatic acid at the hardware store. The acid eats the galvanic coating quickly and completely, then just rinse and weld away.
@johnbotes2039
@johnbotes2039 11 ай бұрын
Throttle position sensors are the main reason you have the lags, and over or under-fueling/ backfiring. Get that on and it will be smooth ;-)
@hussianmohmmad4613
@hussianmohmmad4613 3 жыл бұрын
Nice job👍 Young man
@nooooooooooo6uoki67
@nooooooooooo6uoki67 10 ай бұрын
super neat dude
@TheCalebf
@TheCalebf 3 жыл бұрын
so a few things i would recomend for you to add to your wish list (id probably forget how much you need them and/or the fact i have them to spare) tps, stepper motor iac, i should be getting a couple flex fuel sensors in the near future (i have a couple wrecked ffv's to strip and scrap) seriously tell me what you need ill get it shipped out in the next couple weeks or so
@Iowa599
@Iowa599 2 жыл бұрын
Hardware stores also have black pipe with npt threaded ends, that is also steel, but not galvanized.
@dr.juanmanuelgonzalez6812
@dr.juanmanuelgonzalez6812 2 жыл бұрын
Hi, i’m writing from Mérida Yucatán México and have One VW Thing 1973 and i’m having problems with the carburetor 34 PICT 3 Bocar, your project US very good.
@mikedavis5784
@mikedavis5784 3 жыл бұрын
I have to confess...I have a '64 dune buggy and plan on rebuilding a 1600cc engine that I'd love to add EFI to. Thinking about the VW firing order of 1-4-3-2 means that one bank gets two intake pulses, followed by two intake pulses to the opposite bank. The open plenum manifold your using should help with that fuel delivery scheme. At high RPM carbureted VWs would develop a fuel fog above the carb (within the stock air cleaner). The open plenum manifold helps to reduce or eliminate the fog because it softens the intake pulses. I don't know if your EFI will develop the fuel fog or not, just be cautious at high RPM with an open intake.
@DielectricVideos
@DielectricVideos 3 жыл бұрын
That's great to know! I do recall seeing the fuel fog at high RPM on the old carburetor, although it never caused too much trouble. I'm also running an air hose over to a separate airbox, so that should keep the fog (if any occurs) contained and away from ignition sources.
@mecarloschavez6281
@mecarloschavez6281 2 жыл бұрын
Great video how can I improve fuel feed to my vw efi bug? Added a turbo and I think is running lean Can the original ecu be tunned? - or maybe adding a 5th inyector ? Or fuel pressure ? Looking for advice , thanks
@midianalbertokhaiyow8195
@midianalbertokhaiyow8195 2 жыл бұрын
love see a video of code
@reverendlawrence7584
@reverendlawrence7584 3 жыл бұрын
John could you tell me where you got the. Fuel line injector adapters
@gregdawson1909
@gregdawson1909 3 жыл бұрын
If you drill a few holes in the path of the hole saw it gives the swarf somewhere to go and you will cut much faster
@jonathanfarmer3653
@jonathanfarmer3653 2 жыл бұрын
As an old hand at VW's, my guess on the stumble is not a fuel issue but a timing advance issue. The centrifugal only style distributor(009) is notorious for that. I prefer a vacuum advance advance myself. I have one on my Beetle that has taken all the lag out. It is an 86/87 Suzuki Samuri style distributor that fits the VW.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Great idea! Believe it or not, my newer ECU design actually controls spark timing via 4 HEI coils and a pair of optical pickups mounted inside the 009 distributor. This means I can actually add in vacuum advance via the MAP sensor signal if desired, and apply more or less any timing adjustments I want in software! With the latest ECU and programming, the buggy runs extremely smoothly now!
@runesmDK
@runesmDK 8 ай бұрын
The homebrewn fuel injection doesnt have an accelerator pump. Thats why it stumbles - it has no way of handling transients, but only steady state. You need to look at mapDOT (Delta over time) or preferably tpsDOT to add in an "accelerator pump" function.
@harryloibl5183
@harryloibl5183 2 жыл бұрын
Thanks buddy where do you purchase the injection setup 😊
@alteis38
@alteis38 3 жыл бұрын
new step temperature sensor and lambda probe best efi for small project 😱
@ChipsAndSparksGarage
@ChipsAndSparksGarage Жыл бұрын
Very impressive project! Once you’ve converted one engine you’ll be putting EFI on everything. I just finished building a Megasquirt for my converted tunnel ram project. Does your system use an O2 sensor for closed loop adjustment? Keep up the good work!👍
@DielectricVideos
@DielectricVideos Жыл бұрын
Thank you! Right now it's open-loop only, but my latest board has additional analog inputs that could be used with an O2 sensor for closed-loop control!
@mikedavis5784
@mikedavis5784 3 жыл бұрын
Any updates on the optimization or other changes?
@alaincopter
@alaincopter 3 жыл бұрын
Awesome... love the ingenuity and simplicity of the solutions, and the results seem really good! Do you believe the 2 injector setup will suffice the needs of the 1600? Also, have you thought of implementing a setup close to the classic 2-carb setup where you’d have a manifold sitting vertically above each head, each with its own throttle body and injector? Cheers!
@DielectricVideos
@DielectricVideos 3 жыл бұрын
I believe 2 injectors should be adequate, as these are 195 gram/min high-flow injectors. 1 injector was almost enough for the 1200cc engine, although it would peg to 100% duty on a super hard pull at 4500 RPM. So, for the 1600 I believe 2 should be plenty. That's an awesome idea to run 2 separate throttle bodies! I think if I decide to use throttle position sensing in the future, I will probably use sensored single-bore throttle bodies, one per side as you say. Cheers!
@alaincopter
@alaincopter 3 жыл бұрын
@@DielectricVideos thanks for your reply! Looking forward to see the future of this. What you’ve achieved so far is very impressive - kudos to you for pioneering your own system almost from scratch and taking us along for the ride.
@dr.juanmanuelgonzalez6812
@dr.juanmanuelgonzalez6812 2 жыл бұрын
@@DielectricVideos hi one question what model o type the injectores and what is cae o vehicle?
@Miklethun
@Miklethun 2 жыл бұрын
Love your vids! I'm considering going EFI on my bug as well. Where did you get the plastic injector caps that go to a hose barb? Any update on how it's running? Thanks!
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Thank you! I got the injector caps on eBay here: www.ebay.com/itm/113711584424 I've been driving it every week for 30-50 miles, and it's been running extremely well! It easily does 75+ MPH on the highway and stays cool, even in the 100+ degree heat in Phoenix. I also passed emissions with it a month ago! I currently am using a newer version of the PCB that drives 4 individual HEI coils in wasted-spark configuration, and it runs brilliantly (better even than some modern EFI cars). The fuel injection control is identical, although the workload is split across 2 separate Arduinos to allow for more CPU time to run the 4 coils. I'll be making a video on the new board soon!
@lucasrios5839
@lucasrios5839 2 жыл бұрын
Buenísimo yo estoy por hacer algo parecido en un fiat 600
@bduff007
@bduff007 3 жыл бұрын
Awesome
@limabravo6065
@limabravo6065 Ай бұрын
Dude that manifold is cool as shit well done
@MrJugsstein
@MrJugsstein 3 жыл бұрын
Very cool
@bensoloart
@bensoloart 2 жыл бұрын
can you do a video using pertronics electric dizzy?
@marteloficina
@marteloficina 9 ай бұрын
Hello again dielectric! I started my project to build Fuel injection system for my car, i talked to you in your another video. I have an esp32 and started my project very simple, builded an sketch to create PWM to pulse the injector and in this program i can change the PWM frequency and duty-cycle too. My first test is start the engine with this configuration just to se if will work, i buyed few fuel injectors here and using IRF3205 transistor to pulse the injector. But before testing i have an idea, i have one magnet atached to camshaft corresponding to top dead center of first cylinder, instead of use PWM fixed frequency i can make the injector pulse 4 times after the hall sensor detect the magnet, i can make 4 pulses, 8 pulses, 16 pulses or more after the hall sensor give the position of the first piston,this maybe give me a little synchronization and maybe work betther than use only fixed PWM value ist'n? I have an hall sensor in distrubutor too, but this hall change the pulses because ignition time advante so i don't know if use hall from the distributor is the best idea, what do you think?
@DielectricVideos
@DielectricVideos 9 ай бұрын
I believe as long as the total on-time of the fuel injectors matches the required fuel delivery, it should work. Since you are designing a synchronous system, the pulse width or pulse count should follow the MAP measurement. The more manifold pressure there is, the more on-time the injector should have during each rotation of the crank sensor.
@brucegillies1694
@brucegillies1694 3 жыл бұрын
I would love info on “Mexican” factory F.I. For an up coming 1776 street motor with focus on MPG !
@AngelRodriguez-kp7ug
@AngelRodriguez-kp7ug 3 жыл бұрын
Hi, what kind of info do you need. I had a Mexican bettle 1994 with the efi engine also a turbo efi engine running with megasquirt. Any questions let me know. To see if I can help.
@Jake-jo1iz
@Jake-jo1iz 2 жыл бұрын
make something up about fluid dynamics when explaining the crooked tubes...
@tylerhiggins3522
@tylerhiggins3522 Ай бұрын
My first car in 1989 was a 1975 standard Beetle, first year of fuel injection. I could bury the speedometer on that thing.
@mecarloschavez6281
@mecarloschavez6281 Жыл бұрын
Hello :) I’ve measured the vacum on my efi bug - when costing at 2000 and 2500 rpm and the manifold shows vacumm I’m thinking to enrage the throttle body intake to allow at that rpm to have atmospheric pressure at full load - ( when going up a hill) - do you think that will give me an increase in torque due to the added air / fuel ??
@DielectricVideos
@DielectricVideos Жыл бұрын
It should help, as the more mixture you can get in at full load, the more power you can make. Also keep in mind that the manifold runners and heads will add restriction, so top-manifold pressure may not be exactly the same as cylinder pressure.
@randall1959
@randall1959 2 жыл бұрын
You should market this. People would buy it. I would just about bet that you could get that scanned and a 3D printer could make it from nylon.
@luizcarlosf2
@luizcarlosf2 3 жыл бұрын
Did you consider to put a lambda sensor to correct the rich mix ?
@DielectricVideos
@DielectricVideos 3 жыл бұрын
I did some testing with one and may incorporate it in the future. It would provide a gradual adjustment to AFR target to compensate for drift in the injector performance, sensor performance, etc.
@jhh8688
@jhh8688 11 ай бұрын
soak that pipe in vinegar and it will take off the zinc oxide and clean metal up but it will rust quick when rinsed and dried
@DielectricVideos
@DielectricVideos 11 ай бұрын
Great idea! I'll try that next time I have to weld something galvanized.
@chenjietanlai
@chenjietanlai 2 жыл бұрын
Hello From the clip, it​ You use original vw​ distributor​. I want to know What did you do with the distributor to cause the ecu to calculate the crankshaft angle?​ Have you used the original (4tooth​ 1​sensor​)?​ or has been modified?
@DielectricVideos
@DielectricVideos 2 жыл бұрын
The ECU isn't actually aware of the crankshaft angle, it just counts pulses from the original breaker points to calculate RPM. In this system, fuel is dispensed at a fixed frequency, and is asynchronous to the engine rotation. Only the duty cycle of the fuel delivery is changed by the ECU, dependent on measured manifold pressure and RPM.
@chenjietanlai
@chenjietanlai 2 жыл бұрын
thank​ you
@johnlyons3031
@johnlyons3031 3 жыл бұрын
Have you thought about using an electronic distributor or module like a Pertronix? Made a world of difference for throttle response on my 1600.
@DielectricVideos
@DielectricVideos 3 жыл бұрын
I actually designed my own HEI system just recently, and it made a huge improvement in power. I'm hoping to do a video on it soon!
@martwakoli5892
@martwakoli5892 2 жыл бұрын
Waiting for more of your efi videos. 😍
@tomkafer8775
@tomkafer8775 10 ай бұрын
I was wandering if the mixture is identical between Zyl. #1 and 2 or #3 and 4. I build a similar version. One IDF TB with an aftermarket manifold combined with stock end castings. The AFRs were completely different. And the curves varies between different part throttles and full throttle. Be careful. I try to show a picture from my logging. The problem is named: fuel robbery between siamese ports.
@bryanayers6104
@bryanayers6104 5 ай бұрын
The A/F ratio problem with aircooled VW engine occurs due to the firing order. Manifold icing will still be an issue. Fuel mixture balance left to right bank will be an issue on this design. And as always, the exhaust system shown in video robs HP &Torque....
@pacototo1
@pacototo1 2 жыл бұрын
In this video you clearly explain how you used two injectors to avoid reaching the maximum duty cycle. How was this change reflected in the code?I have been studying the code and I am missing a variable to indicate the number of injectors used, this is because I will use 4, and I don't know whether to divide the time of the injectors
@DielectricVideos
@DielectricVideos 2 жыл бұрын
The only value that needs to be changed when selecting your injector configuration is the injector maximum flow rate, "injector_MaxGramsPerMinute". To compute the correct value, simply add up all the flow rates of the various injectors (in grams per minute). Because all the injectors are simultaneously switched open and closed, the ECM only needs to know the total combined injector flow rate.
@pacototo1
@pacototo1 2 жыл бұрын
It makes perfect sense, I'll be uploading content with my development, I'll show my progress
@Manuqtix.Manuqtix
@Manuqtix.Manuqtix 2 жыл бұрын
I need some help. I’m doing something similar on a Toyota 7k motor. The problems I’m having is. The engine runs too rich and fuel puddles in the intake manifold? What could be the problem? I reduced the fuel mixture on the tuning software still having same issues. I tried switching injectors and still having the same issues.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Some things to check: 1. What angle are your injectors entering the manifold? If the angle is too shallow (too close to perpendicular to the manifold), fuel can pool up as it hits the side of the manifold. 2. What fuel pressure are you using? If it's too low, the fuel might not be atomizing well. 3. Is your injector flow rate set correctly in the tuning software? Remember that the flow rate will be higher than specified if you are running a higher fuel pressure than the injectors are specified at. Also be sure your sensors are all connected and calibrated correctly. If it's a speed-density control system and the MAP sensor is left disconnected, it may run excessively rich due to the ECU thinking the intake is always at atmospheric pressure. To some extent, fuel pooling is an inevitable problem for TBI systems (which is why pretty much all modern cars use port injection or direct injection now). Even in my VW, it goes rich for a few seconds if I suddenly decrease throttle position after a long pull or cruise. But in general, it should be possible to get good mixture quality in most driving conditions with a TBI system.
@hussianmohmmad4613
@hussianmohmmad4613 3 жыл бұрын
What type ecu you like to use ilike your project And if I ask akit did you supply it Thx
@DielectricVideos
@DielectricVideos 3 жыл бұрын
I designed a custom ECU based on an Arduino Nano. You can see the approach I took in another video: kzfaq.info/get/bejne/odBiZ8yI0rPDgIk.html
@ruzterruzter
@ruzterruzter 3 жыл бұрын
Dude for your own safety google the hazards of welding galvanized. It’s pretty serious! Awesome project though
@eduardobaptista7052
@eduardobaptista7052 3 жыл бұрын
Isn't the vacuum barrel of the sensor map connected below the acceleration butterflies
@DielectricVideos
@DielectricVideos 3 жыл бұрын
It does, there is actually a bypass port on the butterfly throttle body that goes through to the vacuum takeoff
@bobg3034
@bobg3034 Жыл бұрын
Air don't like to make sharp turns! I would make that intake a little different?
@DielectricVideos
@DielectricVideos Жыл бұрын
Great idea! If I ever build a 2nd version, I will definitely make it smoother. So far this one has performed very well, as I have put over 3100 miles on it!
@rofieasnan6085
@rofieasnan6085 2 жыл бұрын
Can use in load sensor only? because I don't have map sensor
@DielectricVideos
@DielectricVideos 2 жыл бұрын
If you mean a MAF (mass air flow) sensor, then it is possible, but in my experience it isn't reliable. Long ago I tried a MAF-only EFI system, but the MAF sensor drifted considerably with vibration of the engine and bumps in the road. MAF sensors are better as long-term average sensors for correcting error in other measurements, but are not good for fast-response measurements. An alternative to a MAP sensor could be a throttle position sensor. The mass airflow could be approximated by multiplying the throttle position by the engine RPM, and then by applying a compensation factor to account for non-idealities in the throttle position. But you would want to carefully tune a lookup table or AFR table to give the correct mixture across a wide range of throttle positions and engine speeds, as the two are not likely to be perfectly linear to the mass airflow.
@geirhaugen3781
@geirhaugen3781 3 жыл бұрын
I guess the MAP should be connected to the inside of the barrels?
@DielectricVideos
@DielectricVideos 3 жыл бұрын
The throttle body that mounts below the barrels has a vacuum port that connects downstream of the throttle valves. The small threaded elbow fitting connects to this, and the MAP sensor can be connected with a hose to this fitting. It's important to have the MAP sensor connected on the engine-side of the throttle body in order to accurately measure the air mass flowing into the engine.
@Projects_and_Pistons
@Projects_and_Pistons 2 жыл бұрын
What injector bungs did you use and which injectors? Very cool video also what throttle body is that?
@DielectricVideos
@DielectricVideos 2 жыл бұрын
For the injector bungs, I used these steel ones from FRSport: frsport.com/products/atp-uncategorized-atp-uncategorized-atp-ful-misc2-st I used injector barb adapters from eBay with hardware store bolts to attach them to the bungs. The fit is not perfect, but as long as the adapters are securely mounted over the injectors, they shouldn't leak: www.ebay.com/itm/113711584424 For the injectors, I initially used some lower-capacity ones from Amazon, but switched to these high-flow 440 cc/min to ensure that I would never hit 100% duty cycle and lean out the mixture: www.ebay.com/itm/223283676528
@Projects_and_Pistons
@Projects_and_Pistons 2 жыл бұрын
@@DielectricVideos what do you estimate your duty cycle for e85 would be, do you think that CC would be enough, just curious
@DielectricVideos
@DielectricVideos 2 жыл бұрын
​@@Projects_and_Pistons For straight gasoline, I calculated that my current 1776cc engine running at redline RPM (4500 RPM) and WOT (atmospheric MAP) will consume about 429 g/min, or about 611 cc/min when running at a worst-case rich AFR of 11.0. At the design pressure of the fuel injectors (43 PSI), each one nominally flows 440 cc/min, so the overall duty cycle would be about 69%. E85 has a stoichiometric AFR of about 9.8, which is about 66% of the stoichiometric AFR of gasoline. So, for the same worst-case rich redline WOT condition in E85, you would theoretically need 1/(0.66) = 1.51 times the duty cycle as you would for gasoline, which would come out to an impossible 105% for these injectors. I actually run my fuel rail at about 58 PSI using this off-the-shelf regulator/filter ( smile.amazon.com/gp/product/B07W9H5TF9 ), not 43 PSI. So, in actuality I can theoretically get up to 593 cc/min out of each injector, so on E85 I could theoretically meet demand at about 77% duty cycle. At these flow rates, the fuel pump would likely be the greater bottleneck in maximum flow, rather than the injectors. I am almost certain the $25 fuel pump I'm using would not be able to keep up if I actually commanded this much fuel demand ( www.amazon.com/dp/B07FZ5YKXT ). Right now I typically run either 87 or 89 pump gas, rather than E85 (I probably would run E85 if it was easier to get in my area). I rarely run the engine to its absolute maxima (with the occasional exception during freeway driving). When I have occasionally pushed 4000+ RPM at WOT, it's run well enough for my liking. Really smooth on 89, and the slightest hint of knocking on 87. I haven't installed a lambda meter yet, so I can't say for certain if the engine is leaning out or not. No complaints about the system performance over the last 1800 miles, but as with any homemade system, YMMV.
@Projects_and_Pistons
@Projects_and_Pistons 2 жыл бұрын
@@DielectricVideos thanks for the detailed reply, I am planning on going efi so I can use e85 and reduce cylinder temps on long cruises
@Projects_and_Pistons
@Projects_and_Pistons 2 жыл бұрын
Ok I’ve looked everywhere and I can’t seem to find that throttle body you used, it looks used the only one I found like it is a holly throttle body for a 2 barrel. What did you end up using?
@kas8862
@kas8862 2 жыл бұрын
Uhm AWESOME KWAN-TSU DUDE
@chikubvumbwe3891
@chikubvumbwe3891 8 ай бұрын
How do I contact you Sir?
@saliebester1780
@saliebester1780 2 жыл бұрын
What ecu u running and fuel pump
@DielectricVideos
@DielectricVideos 2 жыл бұрын
I'm running a homemade ECU that uses an Arduino, a slightly modified version of the one I covered in an earlier video: kzfaq.info/get/bejne/odBiZ8yI0rPDgIk.html For the pump, I'm using this one: www.amazon.com/DWVO-Mustang-Thunderbird-Mercury-Continental/dp/B07FZ5YKXT And for the pressure regulator, I'm using this combined filter/regulator: www.amazon.com/gp/product/B07W9H5TF9
@motorised1
@motorised1 2 жыл бұрын
Can we gat a 'never the less' count back.
@minasserkedakis1452
@minasserkedakis1452 Жыл бұрын
How connect injectors to distributor please tell us
@DielectricVideos
@DielectricVideos Жыл бұрын
I'd recommend checking out the video on my open source engine control system: kzfaq.info/get/bejne/ablof895sMfFj6M.html
@THX..1138
@THX..1138 2 жыл бұрын
You will never get rid of the bog without adding a throttle position sensor. The MAP is too slow to compensate for a sudden change throttle position. Really the MAP is more about fine tuning. Throttle position is more important than knowing air flow....Long time ago a company used to sell an EFI conversion for VWs that ran off of only rpm, temp and throttle position.
@pooppoop3084
@pooppoop3084 2 жыл бұрын
He said Bung Hole hahahaha
@DielectricVideos
@DielectricVideos 2 жыл бұрын
lol
@kitcarlson6033
@kitcarlson6033 2 жыл бұрын
There are advantages placing injectors below throttles, and closer to valves. Google KitCarlson EMS. I developed system for VWs around 2003. I am willing to share.
@gilangwahyu4450
@gilangwahyu4450 2 жыл бұрын
If a system have a MAP sensor, can it work without crankshaft position sensor?
@DielectricVideos
@DielectricVideos 2 жыл бұрын
It still needs to determine engine speed from somewhere. It can use the signal from the distributor or other ignition system source to get this information. Crankshaft position is not required for it to operate, as it is an asynchronous injection system.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
@Renato Passos It doesn't need the crankshaft signal, only points signal from the distributor. This signal can be obtained form existing spark ignition points, or it can be obtained using an optical or Hall effect sensor.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
@Renato Passos You could use a MAF (Mass Air Flow) sensor as a true single-sensor EFI control input. They are prone to accuracy drift due to contamination, but are commonly used on modern engines for primary fuel control. If desired, you could try implementing a MAF-only system to see if you can get it to work well. Speed-density (RPM + MAP) systems are generally more robust due to the physical separation between the intake manifold and the MAP sensor, and also allow AFR (air fuel ratio) to be tuned over both engine RPM and manifold pressure. It would not be possible to measure mass air flow using Manifold Absolute Pressure (MAP) alone, however, as the same manifold pressure can exist at different engine speeds (and higher engine speeds will draw in more air, for the same manifold pressure). I suspect an engine could be made to run with only a MAP sensor, but it would be nowhere close to stoichiometric except at one particular RPM value.
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Here's a great resource talking about both MAF and speed-density control strategies: www.mishimoto.com/engineering/2021/05/maf-vs-speed-density/
@rofieasnan6085
@rofieasnan6085 3 жыл бұрын
Code arduino same as before this video?
@DielectricVideos
@DielectricVideos 3 жыл бұрын
It's very similar. I am working on adding an AFR table to change the fuel mixture depending on load and RPM conditions.
@rofieasnan6085
@rofieasnan6085 3 жыл бұрын
@@DielectricVideos you have using throttle sensor code? Or can i get new code? Thanks
@DielectricVideos
@DielectricVideos 3 жыл бұрын
@@rofieasnan6085 I haven't written throttle position code yet; however, I just posted a new version of the code with AFR mapping and rate-of-change of MAP pressure, which emulates rate-of-change-of-throttle from a TPS. Here it is: github.com/JohnPattersonConsulting/DuneBuggyEFI/blob/main/MAP_EFI_V2.ino
@corollagl82
@corollagl82 3 жыл бұрын
Does the injectors operate at the same time?
@DielectricVideos
@DielectricVideos 3 жыл бұрын
Yes, they operate at the same time and are wired in parallel to the same MOSFET and 12V supply.
@brunopmoraes
@brunopmoraes 2 жыл бұрын
@@DielectricVideos which spec for this mosfet ? Thank you!
@DielectricVideos
@DielectricVideos 2 жыл бұрын
@@brunopmoraes I'm currently using an IRFP460 to drive the injectors. Using the same type of transistor to drive an HEI ignition coil as well!
@multimargejta123
@multimargejta123 2 жыл бұрын
Sequential or simultaneous injection?
@DielectricVideos
@DielectricVideos 2 жыл бұрын
I'm driving them as simultaneous asynchronous injection under speed-density control. If you build a similar manifold, you can actually control it however you want, depending on how you configure your ECU.
@multimargejta123
@multimargejta123 2 жыл бұрын
@@DielectricVideos is that in your provided arduino code?
@DielectricVideos
@DielectricVideos 2 жыл бұрын
@@multimargejta123 Yes, it is. The currently available code operates the injectors at a fixed frequency, and the duty cycle is adjusted based on points-triggered RPM measurement and MAP sensor. The engine displacement, number of cylinders, and injector maximum flow rate are given as user-configurable constants in the code.
@multimargejta123
@multimargejta123 2 жыл бұрын
Next, put a turbo on it
@DielectricVideos
@DielectricVideos 3 жыл бұрын
Special thanks to نصائح و معلومات و منوعات for helping with research and development on the EFI control system! Here's his channel: kzfaq.info/love/4YCEkO7IYv8OZWaHNrs4uw
@shinymud7
@shinymud7 9 ай бұрын
Why didnt you just print the whole manifold?
@DielectricVideos
@DielectricVideos 9 ай бұрын
It needs to be fuel-resistant, tolerant to high temperatures, and resistant to cracking in high vibration. Because of this, I felt that steel was a preferable choice to most of the common 3D-printed media.
@lpz3665
@lpz3665 3 жыл бұрын
When a nerd gets ahold of a vw beetle .. I don't even think he got his hands dirty..or his hair. I say great job..
@JMKGarage
@JMKGarage 3 жыл бұрын
🤣🤣🤣 Good work to the smart fella indeed
@MrIngorodrigues
@MrIngorodrigues 2 жыл бұрын
1 injector cold Handle this 60hp
@DielectricVideos
@DielectricVideos 2 жыл бұрын
Maybe, depending on the injector. I originally had a pair of 273 cc/min injectors, and I could definitely get it to lean out at high RPM/high load. On the freeway, it would actually gain power when reducing from WOT to 50% throttle. I changed these out to 440 cc/min injectors and it seems to keep up all the way to WOT now. IMO it's much better to have extra headroom in the injector capacity than to risk the mixture going lean at high load. Aircooled engines will burn up really quickly if the mixture goes lean under power.
@MrIngorodrigues
@MrIngorodrigues 2 жыл бұрын
@@DielectricVideos i use a iwm52300(off a 1000cc engine) on my 1600cc, hold 140hp on a turbo setup too
@DielectricVideos
@DielectricVideos 2 жыл бұрын
@@MrIngorodrigues Very cool, looks like the iwm52300 is a real beast of an injector. Do you know the flow rate and rated fuel pressure on that one?
@MrIngorodrigues
@MrIngorodrigues 2 жыл бұрын
Sure, they are infamous here caled "dumb EFI" so they are cheap ones lol The specs i found are 29-36ml at 1bar 42-48ml at 1,5bar
@bwm999
@bwm999 3 жыл бұрын
Welding zinc galvanised steel is not good for your lungs.
@ruzterruzter
@ruzterruzter 3 жыл бұрын
By not good for you he means can kill you long term! Don’t do it!!!!!!!!
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