I appreciate the info . On another video you mentioned the Alternator, with the dual fans ( my same setup) I looked back, my Alt is a 100 amp 😣 , I honestly wouldn’t have even thought about it , great content, I’m a GM guy but I’m working on my 85 F150 408 stroker 4speed AOD 2 WD

Good info and clearly delivered. Bought a 74 Challenger a year ago and guy threw in Sniper EFI that he could not figure out (that's what he told me anyway). I guess he pulled it off and stuck his 4-barrel back on. I dug through 4-5 boxes as he scattered the stuff in a bunch of boxes and it appears to be all there minus a temp sensor. I am currently installing it after doing a ton of rust repair. Videos like yours are really super helpful in helping avoid a few "gotchyas"! Thanks for posting.

Thank you so much man. This helps so much. I’ve been planning to get a Holley Sniper for a while and this added info will result in much less headache. Truly thank you 🙌🏼

I just watched your video, I installed the Sniper 4150 on my '70 GTO and the only issue I had was the external pump (pure junk) and the coolant sensor reading too high. I replaced the external pump with an in-tank unit and didn't do anything about the CTS, now that I have the part number I'm gonna change it out, thanks for that number. I fabricated the throttle linkage and I'm happy with that. I tried the progressive linkage and even after changing the the ECU to where mine opened (41%), it ran like shit, so I went back to a 1 to 1 linkage and extended it, the car runs great now. Good video dude.

OUTSTANDING video....right to the point no stupid intro and very informative

awesome build mate cant wait for ur next videos!! thanks for posting from australia!! give the 454 some love!!

I'm interested in using the Holley Sniper System on my son's project car. This video was fantastic, informative and even entertaining. You know your stuff too - much appreciated.

Bud your a champ. Please keep making videos. Honest and real. New subscriber for sure

Thanks for sharing your experience with us. Helpful and time saving for me.

Awesome video. Just subscribed. Planning my sniper install for next month.

Happy to see another square body guy with a sniper efi

The Sniper EFI should be engineered to use the standard fuel lines, fuel pump and float level fuel system while using only a pulse fuel injector controlled electronically. That would reduce the installation hassle to the oxygen sensor, the throttle body EFI and the display/computer. That would encourage more people to do the conversion.

Thank you , your information about the throttle plates and a stick shift , I had a MSD EFI and it did the same thing very jumpy when shifting .

I just installed my tank last week. Just wanted to say that the instructions call for the Aviation Form a gasket on the gasket and NOT the fitting threads. Maybe the instructions got updated but mine says to use a fuel proof thread sealant. I got Permatex 5735 Lock and Seal which is fuel safe. Haven’t run it yet. Good video.

Thanks for the honest review, mine gets delivered today 😬😬

if you call holley they will send you a different sensor at no charge. Also in the v4 software you can put a offset in for the sensor to make it read correct. If you put the sensor in the head it will read high. It should be located in the intake. Also play around with the software and you don't need the linkage. you can tune out all the problems you are having. i have the same system on a 69 camaro and had the same issues. after playing with the software it runs like a new car. mine has been trouble free for the last 3 years.

getting excited to be installing my holley super sniper soon. videos like this are super helpful. the do's, don't, and gotcha's experienced in real life installation.. thanks man.. sub'd.

Thanks for the honest review!

Ford guy here. That's for the review. Buying for my Fastback with a 5spd and sbf. Good to know about the throttle settings.

Good video. I agree completely with the H2O sensor and think the O2 sensor can be improved. I have another sensor on the other side with a gauge in the car. The two are not matched up. I read the O2 is from a VW or Audi. Can you tell me the exact part number? Thanks DOC

Gasoila works well for sealing fuel NPT fittings. That's what we use on gas pump fittings at gas stations.

I had a ‘81 suburban 1/2 ton 4x4 back in the day…it had a black goodwrench 290hp replacement motor in it ……other than 33” tires it was stock with the garbage quadrajunk carb….this was back in the late 90’s before we had these fancy efi bolt on kits….even then the guys at work were amazed when id have my cuzzin place bets that the big beast could do doughnuts on dry asphalt…..you should have seen the look on there faces when that big ol thing came around on the 2nd rotation and got all that mass swinging….man that truck was fun and NEVER left me stranded, too bad some tweakers stole it…..few years later i had a ‘86 3/4 ton 4x4 and there was no comparision that thing was junk it had a 350/th400 combo as opossed to the 350/th350 combo in the ‘81….i really miss that ‘81 though….i ended up donating the ‘86 for a tax write off..soon after i gotta ‘72 c/10 longbed fleetside…350/th350 combo…did all the bolt ons and put loud ass headers and dual glasspacks , rims, chrome,chrome, and more chrome…once again the tweakers stole it on a loud stormy rainy night…they must have pushed it down the street some distance before they started it and drove off…..about a week later i gotta call from the police dept. saying they found it stripped down to the hubs in knee deep sand….the tow truck got stuck trying to recover it and they had to get a second one out there to assist and get them both out…then had the nerve to try and charge me for 2 recovery vehicles upon release at the tow yard…wtf….needless to say i had spare steel wheels/tires and tinwork /carb for the motor, got hef running in the tow yard hours later and drove it outta there…it wasnt the same, with the valve covers being stolen sand had gotten into the motor and caused it to smoke like crazy…in short the truck had been violated in a major way…i ended up selling it to a father/daughter team as a project and she was thrilled when i started it for them and she heard how loud it was…..shortly after i got another c/10 longbed fleetside this time a ‘68 327/th350, at this time LS swaps were a thing and i ended up pulling the 327 and selling it as a whole running motor locally for $400, mind you i bought the truck for $1000 so at this point im winning, put an ASA cammed 5.3 in with 4.8 flat tops and a 3000stall converter for the th350 with the 3.73 rear that truck was a rocket, put dual glasspacks on to piss off the nieghbors and that it did, enjoyed it for about a year but my wife had a cow every time i started it cause the windows on the house would rattle and she sensed the nieghbors hated it cause it was loud and obnoixious looking….so i took the hint and sold it for a nice little profit….2years later i was surfin craigslist and found jackpot…a ‘73 c/10 shortbed fleetside straight 6 with granny 4 spd non running…he wanted $5k….i went to go see it and pointed out EVERY flaw…i got him down to $3500…..and he even trailered it home for me….not even 1 week later i had a built LS installed and running with a 3000 stalled th350 in it with the factory 3.73 rear this thing was a missle…i replaced the hood ,doors, and fenders with new pieces and currently in final stages of prep for paint… not to mention i added a vortech v-3sci centrifugal supercharger……its in primer now and ready for paint …i plan on keeping this one only cause the value on shortbed c/10’s is ridiculous….its ran by a holley terminator x just like my 370” lq9/ls3 headed LSA supercharged nova…im building a 408 stroker for the nova and when thats done the 370” will go into the c/10……fun fun fun….cant go wrong with a chevy truck…my daily is a LMM duramax lifted 9” on 37”s…and with only a tune it will smoke most cars on the road

I have installed 3 black Holley sniper units. All 3 were replaced because of the same issue. They sprayed the black powder coating inside of the unit. the easiest way to see is to take off the left side cap that the return fuel line connects to. then pull out the diaphragm that's behind it. You will see it has black powder coating inside of it where it is exposed to gas and it will peel. 2 of the 3 just wouldn't run after the screen on the diaphragm clogged the 3rd saw fuel pressure issues and just went WOT on me with zero throttle control, that was scary. If you have a black unit check that out, Holley replaced all mine with a brand new one but they send out a new one with the same issue. I would recommend not getting powder coated units for replacement.

Great video, I have most of the same issues. 1970 C 10 big block 396 with an automatic. I sure could use your help. Just subscribed, My issue is stalling when I am at idle. Just advice, Thanks Dan

I just Subscribed . Well done video. If you keep up the good work and effort on future videos ,im sure you will do well. I watched due to thinking of getting this unit for my mopar. Will this unit except nitrous. ? Anyway keep up the great videos . Will look forward to seeing more.

Im a Holley guy, their carbs are simple to me. I've had 3 vehicles and I've always stuck a holley on them, and was happy. But for EFI, I think im going with Edlebrock. I've only heard good things and they've been doing this for over 30yrs at this point. Good video though. And thanks for info the remedies.

Just put a brand new gas tank in. Should I get a drop in fuel pump? I ran a supply and return line 3/8 and 5/16 and currently have Carter carburetor. Also should I buy holly throttle linkage? I have l35 396 .030 over thanks

yeah im probably going back to a carb. i have the edelbrock estreet efi on a pontiac 428 and its good never gave me any serious problems. its been a few years. the only problems were a leaking fuel pressure sensor and header flange gasket soon as i figured that out it ran real good. but i cant get it to idle below 900 rpm. tried everything i can think of. set the throttle stop below 900 and then it wil hunt continually and there are no vac leaks. possible bad throttle pos sensor. the tablet it comes with is cool but its bluetooth and the comp doesnt have enough signal strength to pick up from inside the car. so theres also that. i think ill just put the 850 back on it. so much simpler

That ignition system looks like a pain in the ass to install. I just watched the Holley video on it.

I plan on getting this setup for a Chrysler LA stroker..... wouldn’t mind doing a blow through later.

Great review! I was going to do a Megasquirt or Haltech on my 75 Datsun 280z that I’m Turbo’ing soon... but I started looking at the Super Sniper 650 to work with a single carbureted intake and a bonnet / carb hat, with a front mount intercooler. Is the tuning as “self tuning” as they say? Or will a tuner be required to get a solid tune?

Good video man 👍 just subscribed

Thanks Mate. Very helpful.. A few things though, how did you find the flat spots with the sniper as opposed to the mechanical? was it a consistant torque range also? Id like to put it on an xy utility. I know your in the states so you may have to google that... Thanks again

i ran into the same goofy daily driving and after talking to holley and going back switching intakes to a torker 2 ... back on dyno it made all most 60 more hp and ran perfect on the street. small 355 roller cam 520 lift 420 hp to tires and my tuner told me from the start it might be a little big on the cfm side 870 is more like a bigblock or 500hp+

great video. Im looking into the sniper system now. 1. did you use the supplied regulator on the holley system or are you running a stand alone regulator. 2. did you have any issues running this system on a dual plane intake? Thanks

Great video, well done, lots of information. I have a 70 Corvette, 454 mark IV and am going to install a Holly Sniper. Looks like I can fix some trouble areas and eliminate some frustration before they get me. I especially like the progressive linkage set up. Is there a part # for the linkage I need? Thanks, Steve

Very good video. Tks for the info. Great great !!!!!!!!!!

I want to hear it run and drive!

Gday mate form Australia. Thanks for the video and info. So I have a Sniper system to install. I have the Throttle progressive linkage to retrofit. I had heard about the temp sensor problems. So what replacement sensor did you use again and where could you source a similar one???? Also the linkage you talk about is this for using a cable system???? I am not using an in-tank fuel pump sadly but have the Holley fuel kit. Anyway good honest info. By the way, how much better was the engine after fitting???? Better starts, economy, driveability, acceleration?????

Good video and very helpful. I have a question regarding Holley and it's 255 Lph OEM Style Fuel tank Module product #(12-304) that allows your to use your existing stock gas tank and run a returnless to the Sniper EFI. Wonder your thoughts on this holley product and if your have ever used or installed it before and if it's worth installing a returnless. Thanks again

Hi I just removed my holley demon after 10years been a awesome carb which was running wet plate nos 150hp shot And have installed snipper 8 still run nos plate but now dry shot.... The snipper takes care of the fuel These snippers are neat little efi system Reason I went snipper is Australia fuel is crap.... But the snipper can handle E85 really well.... As before I run avgas but now illegal on race tracks here in Aussie We had to connect the laptop for a bit of fine tuning but runs awesome on the track and drives very lean on cruize And later hope to boost some neat HP figuers out of this snipper...... 351windsor.... Cheers

Would you recommend the in tank pump no matter what? I’ve already ordered the kit with the in-line pump and just wanted to see if this system will work well for for my truck. If I can save pulling the bed or dropping the tank I’d like to but if it’s going to improve the functionality that much I’ll do it. What’s your thoughts?

I put the Quadrajet Sniper on my ‘76 K5 with a 400. I also did the in tank pump. Happy with it after a year but I think I’m missing something. I still have the HEI distributor. Should I get the hyperspark system? Another $475 on top of $2000 spent to get where I am. Worth it?

1. FYI; I did an LS swap with 5.3L stock temp sensor and i havent checked like you did but MINE seems to run very hot before my electric fans kick in 2. even my moms 2015 Suburu outback auto tranny engine has this problem, I ABSOLUTELY HATE driving her car around especially just short trips to give step dads dog a ride, hes slip sliding and flopping everywhere cuz i can be soft enough on take offf. 3. i was able to reuse my throttle cable bracket 4. also had similar retrun line fuel leaks, couldve used this stuff

My only problem is no body tells the price. I would love to have a set up like that on my roadrunner. Also what is the horse power it will go up to. The video is great keep up the good work and the hammer down

Did you have overheating issues before the EFI? Did you get it dyno before you order the 1250? I have a 454ss and really want the efi but still doing research. Love your truck

Love it bro. Just got yourself another subscriber. Bad ass truck(and sun glasses haha). How’s this set up been working for you?

That leak in gas hose, wonder if that has happened to anyone else and if only this model of Holley?

Is the Super Sniper taller/lower/same height as the 750 you took off? I cannot go any taller with an EFI throttle body since I have a Weiand 174 blower or my air filter will be hitting the underside of my hood. I'm already using a 14"x1" round air filter w/ a 1" drop base and KN topper.

Is that coolant temp sensor you mentioned only for GM applications? Great video

Did you follow the directions to a (T)? I have mine coming in the mail tomorrow. Would you recommend this on a stock application?

Thinking about get the same setup for my 355 small block. It’s got a Weiand 177 Supercharger on it though. Do you think it would work alright on it? I guess I shouycall Holley but just picking your brain. Cool vid, can’t wait to see some upgrades on the truck👍🏼

Did you have to put a 1" spacer between the EFI and manifold?? Or did you have to go to a single plane manifold? TIA

I'm assuming that's the 12-308 fuel pump? It says internally regulated to 58 psi, did you still have to use an external regulator?

Thank You and 1st timer and sub!

Cool video

How accurate is the efi as far as learning mode on the AFR wideband ? You said you changed the sensor so when your cruising , stop and go and WOT that thing is keeping perfect AFR ? Just asking since that's the whole purpose of it . Also if you can go into software and manual tune it would be a plus instead of just relying on the unit to learn all the time how is the AFR ?

Just subscribed. Great video. I have a 72 BUICK GSX replica that dynoed at flywheel at 550hp with a spacer and a Speed Demon that I hate with a passion. I may be increasing the horsepower to maybe 650, but debating on doing what you did with 1250. Your thoughts? Is it a wast of money? Do you have Dustin’s direct number? Sounds like he was really helpful. Just put in a notched tank with internal pump and really thinking about pulling the trigger on HOLLEY SUPER SNIPER LIKE IN NEXT DAY OR TWO. Thanks for any help.

I'm considering going to this on my square body suburban. I currently have TBI on it and it's got a few issues hiccups when taking off cruising on the highway it has a hard time picking itself up when throttle applied and fuel mileage sucks about 9 mpg. Have you noticed any improvement on fuel economy with the sniper?

I am in the process of building a race car...what are your thoughts on wide open throttle?

Did you see any noticeable improvements in mpg and cold starting

How much it all cost?

I put a Sniper on my 66 Mustang. I threw it in the trash four months later. It WILL leave you stranded at some point. Left me stranded twice. No carburetor has ever left me stranded in 30 years. I went back to proven technology: Autolite 4100!

The Aviation sealer does not work with fuel, the gas will dissolve it, why don't they suggest Teflon tape on it?

After a couple of years of having this whats your opinion now and hows the drivability, start up and throttle response? Thanks

Hey man , how's the cold start difference between the sniper and the carburetor ?

Do you recommend getting the cd box with the kit

How's this running now that you've had it 2 years? I ordered one a couple days ago and then got to looking at videos of them and there's a ton of people complaining about ECU and sensors dying and even the control box being DOA and having to send the unit back to holley and wait while your car is out of commission for 3 weeks. There were so many of those type of report, it made me go ahead and cancel my order. Its hard to find good long term reviews on these things. Maybe because when things work right, nobody bothers to post about it? How many miles are on yours after these 2 years and how much downtime would you say you had from it once you got it up and running?

bought a msd atomic 2 and wondering do i run a pvc with it ..........thanks

what timing were you running before installing the upgrades. initial and total depreciate the help.

I was reading a review and it said that the carburetor was quite loud. Do you have any noise problems?

What’s the part number for the temp sensor

Great video....thanks for explaining the issues you had. So, I've been researching this for a while and I want to install a Sniper unit on my 427 BBC. Which unit do I need to get...Super sniper 1250 or Sniper 650? Currently, I have 450hp but I do want to do a top end kit and probably a 200 shot of nitrous which should put my hp levels over the Sniper 650 unit. What hp level did your motor originally have? Did you have any issues running the 1250 at the lower hp level?

Does the parts also go for fords aswell?

Lol, has Holley everything, reps the edelbrock air filter cover

Do you know about 20-16 throttle lever extension?

Do u have to phase the distributor ?

Did you have to do a fuel return line? How was that?

About how long did it take you? Thanks

The Holley super sniper 1250 is roughly $1,500, the hyperspark distributor set is about $500

What sensors did you purchase?

returned the whole system and got edelbrock instead. nothing but headaches with the sniper

Nice Edelbrock airfilter on there. Lol

Im no expert, but it appears that you used an AN fitting for your fuel line and screwed it into a brass NPT fitting. Could've been where your leak came from.

Holley does not want that system set with progressive linkage! Not suppose to use rubber lines with hose clamps!

Is it still running and do you still recommend it?

Are you still happy with the progressive likage.

nices

I just finished installing mine, went to flip the key and didn't even have the touchscreen turn on, I went over EVERYTHING TOP TO BOTTOM and still nothing. It's like it's braindead this experience has been dog shit to say the least...im gonna call holley later today to see what they say but ill most likely have to return the whole unit and get another one with a different tablet

What about mpg?

Why did you go with the 1250 with a stock motor?

This guy is the real deal. I want to see him drunk and listen to him tell us the truth about America!!!

We're the lines all long enough! I find most of these kits always come up a couple inches shorter than what I need

Rector seal hmm sounds like something people need in prison

Cattywampus (sp). Lol.

Honest Dude Review: Red Glasses.....yeah, got too high before filming.....happens..

For one you way too low on horsepower for the super sniper if you don’t have at least 550 your gonna have that problem with the amount of motor that system is designed for you wouldn’t need the progressive linkage as much

No way would i want to deal with these "small" issues. You've already worked through them but in the moment your screwed over and over until its figured out

Ya, buy directly from Holley and WAIT 4 MONTHS !!!🤬🤬🤬🤬

The first two problems can be resolved within the software. But unless you know the software very well you will get nowhere. The self-learning thing is a scam. You need to take this to a tuner that has a Dyno and it might take all day and he will create a map and it will probably cost $1,000 at least. This whole Holley sniper crap claim is pretty much as deep in doo doo as CNN