miata gsxr750 itb

Рет қаралды 22,801

2 жыл бұрын

I decided to remove the 4AGE 20V Silvertop ITB and switched it over to the 04-05 GSXR750 ITB. I find that the gsxr750 are more easier to synchronize and more available in parts as the 4age 20v ITBs are becoming more scarce and prices are going up and will only continue to go up. I also found that it was way more affordable to do the gsxr750 itb (DIY) compare to the 4age 20v itb.
The gsxr750 itb size seem to performed better on the stock engine than the size of the silvertop itb. So make sure to choose the itb size carefully for your engine setup.
Side note: DON'T EXPECT A MASSIVE HP GAIN FROM SIMPLY JUST INSTALLING ITB ON YOUR STOCK ENGINE. YOU MAY GET ZERO OUT OF IT. YOU'LL NEED SOME ENGINE WORK TO IMPROVE SOME HP GAINS OUT OF A ITB SETUP.
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Пікірлер: 58

@RENAULTTEAM89 2 жыл бұрын

Very nice job! Good to see the attention to detail👌

@joelnorman8648 2 жыл бұрын

Great video! In the middle of doing the same thing to my nb with some 99' gsxr throttles and a speeduino ecu. Would love to see a follow up tuning video!

@jimyang6951 2 жыл бұрын

Sweet! Hopefully everything will go smoothly for you. My tune date is Feb 5th so as soon as I get it dail in, I'll definitely post the update video.

@LiftbackLife 2 ай бұрын

Oh my gosh using the throttle’s injector mounts as vacuum holes to hook up to my map! Why didn’t I think of that 😅😂 awesome vid

@peterbryant3584 18 күн бұрын

Great video great content keep up the good work

@Victor-up4hh 2 жыл бұрын

Very interested in this, just found your channel! Looking forward to seeing how they come out and what kind of power these make compared to your previous ITB setup.

@jimyang6951 2 жыл бұрын

Thanks! Feb 5th is the day I get it dyno tune. I'll post the update as soon as that is done. I'm kinda nervous yet excited about it.

@psycoape5753 8 ай бұрын

Ngl I was thinking how to make more power without a turbo and honestly i wanted to do something cool to my miata this is such a great video thank you and im also from MN!!! glad to see a fellow Minnesotan. hope to see you out there.

@jimyang6951 8 ай бұрын

Thanks, you can make some power out of itb BUT you'll have to do some head work, cams, etc... turbo setups are cool, but I had always been fascinated with itb and the induction sound it puts out. If you have an Instagram, I would like to follow your build. If you want a tuner who knows how to itb, reach out to Antonio Della Polla. His shop is call 8ighty 7even. He is superb at tuning itb and will take his time to dail it in properly for both WOT and most importantly, driveability. He have taught me so much since my itb setup. You'll see me out at BIR "karmageddon", DCTC, some car meets and car show. Hope to see you out there, too.

@psycoape5753 8 ай бұрын

@@jimyang6951Thanks, I am planning on working on my head mainly just valves, and slightly bigger cams. I'm not looking for like crazy horsepower just a little extra I only have a 1.6 but the goal rn is to go standalone and learn how to tune but thanks ngl you're super helpful its hard finding local guys so I'm happy I stumbled across your channel.

@heruhadianmudjenan7126 23 күн бұрын

Amazing... inspiratif

@briantenpow9469 3 ай бұрын

Great work! Just a suggestion. If you had used the injector location on the GSXR throttle body. You would make more HP do to a better atomization of fuel air mixture.

@jimyang6951 3 ай бұрын

You're absolutely right! Thank you for the information. I am always looking for more itb tuning knowledge. It's definitely something to consider!

@Thatdavemarsh 2 жыл бұрын

This is super helpful. I’ve been thinking about this and you’ve laid out a nice clean approach. I’ve got a speedy EFI setup so just need te hardware and a retune. I know it’s more effort, but any reason you didn’t shorten the intake manifold more?

@jimyang6951 2 жыл бұрын

I could of shorten the intake manifold more but I have no access to any sort of machinery to cut out flanges nor can I weld. Then I decided to go this route. I am currently working on another set of gsxr750 itb on 1.6 intake. This one I'll get it weld and get it angle at 45 degree so that I could use longer stacks.

@andysaxe7087 2 жыл бұрын

Great content! Wondering why you don't use the new vacuum ports to MS2? Will you use those for fine adjustments for each ITB? I had a gsxr and the mercury vac adjust tool and it really helped. For the MS2 are you getting a good vacuum map reading for tune from somewhere else?

@jimyang6951 2 жыл бұрын

Which nee vacuum ports are you referring to? The 5/16 barb fittings that I put into the injector ports? I fed all four vacuum from the smaller port into a vacuum block. I'm getting a good signal and good brake pedal feel. I haven't the chance to autotune it yet because there are still way too much snow on the road. I will be trailering it in a in close trailer to a tuning shop on Feb 5th so I'll post the updates then

@Nandwar213 2 жыл бұрын

Good vid man! I've been working on getting some stuff together to do this. Nice to see someone cut the intake thats not just a fourm post. Did you cut it right where the supports end on the runners?

@jimyang6951 2 жыл бұрын

Yes, I cut it right where the support ends. I am also getting another intake spare manifold cut up and I'm having a friend weld some tubes to line up with the gsxr750 throttles. I'll post a short video of it

@Nandwar213 2 жыл бұрын

@@jimyang6951 good to know. I pulled the intake off of my parts car earlier this week to cut at work. Was really hesitant but this has eased my mind lol

@Nandwar213 2 жыл бұрын

@Jim Yang Got my manifold cut and ordered my throttle bodies. Found a set already stripped for 25 bucks on ebay. Got a TPS silicone couplers and a pigtail for $60 on Amazon. So far less than 100 bucks in! Going to try and get my megasquirt installed this weekend if I can get my bushing kit finished up. Then next weekend I'll probaly have everything ready to be put on! I'm so excited 😁 fourms make this seem so complicated and expensive...

@FriedTurkey 2 жыл бұрын

Nice job mate, I've got a similar setup with gsxr-600 TBs. Is your throttle cable actually not binding like that? I've got mine routed over my valve cover making a very long curve from my firewall to the TBs, keeps it as straight as it can be under these circumstances.

@jimyang6951 2 жыл бұрын

Real cool! I'm in the process of doing another set. The throttle cable doesn't bind at all.

@bennanoman 3 ай бұрын

i would love to talk to you more about this setup, im working on doing almost the exact same thing

@jimyang6951 3 ай бұрын

We can talk more about it. If you have any questions, just ask me here, or you can message me on Instagram Canyon_carvers_ Or you can also check Facebook group: mx5 ITBs individual throttle bodies. There are a lot of people this group who are more helpful than any other mx5 FB groups.

@spice.3493 8 ай бұрын

What adaptors did you use to mount those velocity stacks onto the throttle bodies?

@jimyang6951 8 ай бұрын

danstengineering.co.uk/Parts-and-Accessories/Velocity-stack-kits/Velocity-Stack-Kit-for-GSXR75010001300-Throttle-Bodies-All-lengths- Or danstengineering.co.uk/Parts-and-Accessories/Velocity-stack-kits/Velocity-Stack-Kit-for-GSXR750-SRAD-Throttle-Bodies-All-Lengths

@andysaxe7087 Жыл бұрын

Is there anyway I could see your MS2 settings? We have the same setup and struggling to get idle and low end power and response smoother.

@jimyang6951 Жыл бұрын

Sorry for late reply. I totally missed your comment. You may Instagram me. canyon_carvers_

@CoryBan777 9 ай бұрын

So I have some ST itb's sitting in my garage atm, do you have a write up on their application that you originally used by chance?

@jimyang6951 8 ай бұрын

I do, but my 1st ST itb wasn't as detailed as the gsxr750. The reason was that I was still in the learning process. If you're interested, go to my videos, and you'll find it there. It's split up in 3 parts, 10 minutes each. Take whatever info you can get from there. The base tune is almost identical to my gsxr750. You just need to make a few adjustments. Like change the timing chart to alpha-n and change your fuel setup to sequential if your ecu supports it. Or semi/sequential. It should start up and idle. From there, you can fiddle around with the numbers at idle to smooth it out. 🍻

@alessiocarlevaro6934 Жыл бұрын

Hi, i'm interested in doing something similar, is there a reason you tuned fuel using tps and ignition using map, instead of doing it all on tps?

@jimyang6951 Жыл бұрын

I didn't show it in my video, but after I got it to start and the tuning process begun. The ignition was changed to tps.

@romz2 8 ай бұрын

Can you do the same w GSXR 1000 itbs? Awesome setup!

@jimyang6951 8 ай бұрын

Yes, you can. You just need to make sure that the spacing on the gsxr1000 will be close to matching up with a cut intake manifold. You might have to cut off the runners off the intake manifold and weld pipes to the intake manifold to match up with the gsxr1000 spacing.

@romz2 8 ай бұрын

and this setup should work on a 2003 nb2 with vvt?@@jimyang6951

@Thatdavemarsh 2 жыл бұрын

Jim, thanks for the detailed post. Any issues yet with having the itbs supported only with the 40mm hoses?

@jimyang6951 2 жыл бұрын

So far no issues. I cut the hoses short so that the throttles are close to the intake. I have been thinking about how to makeshift some sort of support for the itb. When I do, I'll share it in my video

@luischavez7977 Жыл бұрын

Any idea which itbs would be good for a 1.8 mx5?

@jimyang6951 Жыл бұрын

If you're interested in the bike itb, then 750 will work. Some people even use 1000s.

@fishrsa9046 2 жыл бұрын

i've got the old sohc b6 in one of my little fwd ford utes. it has the intake that goes up and over the valve cover, with the throttle opening facing the exhaust side. it's a pain in the fucken arse to work on, because to remove the valve cover you have to remove the throttle. i've thought of doing something like this for a while now, but my intake looks vastly different than the dohc intake lol. oh well, maybe next time edit: also, the old AFM thing is an obstacle. it's that thing with the flap inside that measures airflow. if i unplug that, the fuel pump doesn't turn on and the injectors dont fire(something to do with eliminating risk of fire in an accident) so i would need to somehow fool the ECU into getting those to work, as i cant be arsed paying 484728742848247824782472482482478$ for a new computer box

@jimyang6951 2 жыл бұрын

I know the intake manifold are different from the b6ze but the sohc b6 intake manifold runners should look similar to the b6ze. Nice thing about that is you could still chop it and still fit some gsxr itb on there. If the spacing on the intake runners are off, then you might have to get some aluminum tubes and weld it onto the intake runners to match the gsxr itb spacing. I had always hated those disgusting afm. It just looks ugly and shouldn't be there in the engine bay. The only way to get rid of those ugly afm is to just get a standalone ecu. There's just no way around that. When you decide to get a standalone ecu and don't want to pay a lot for it. You should be able to get by with speeduino that's a little more affordable BUT you'll be limited on somethings. I am currently using megasquirt pnp2 but I'm kicking myself because I should had just bought the megasquirt pro pnp3. The tuning chart on those are BIGGER (gives me more tune ability) and it have more options than the pnp2. I'm currently still working on my next video and will be posting it soon. It'll be about how i tuned it and how to get started on a itb alpha-n base map.

@fishrsa9046 2 жыл бұрын

@@jimyang6951 not gonna lie, right after writing my comment i kind of changed my mind and thought about just getting an ecu, more expensive but probably worth it considering it will take away the headache of the AFM :D

@jimyang6951 2 жыл бұрын

@@fishrsa9046, yes. just save up and go with a standalone ecu. knowing what I know now, don't settle for a middle of the road ecu. get one that's going to give you more options even if you don't need the additional options, it's nice to have it when you do need it.

@biggboysouth 2 жыл бұрын

Great content as usual, I think you got my buddy to want to do this project lol. Glad to see you back on the ITB path! Will you be posting the tune in your next video like you did here?

@jimyang6951 2 жыл бұрын

Hey wassup!? Yea, after the 1st setup.... I wanted to do another setup that was going to cost less than the 1st one and at the same time I wanted to learn more about tuning itb on MS. So I waited for the whole season last yr for an manifold that was supposed to get sent out to me but turns out the itb manifold needed more work so they refunded me. Then I decided go this route which only costed me about $380 (that's including gaskets and all). I'll eventually post the tune once spring comes here to Minnesota.

@biggboysouth 2 жыл бұрын

@@jimyang6951 That's awesome, I've seen this approach has been becoming a little more popular in the FB group. It's awesome how much it brings down the cost of going ITB. That really is the biggest con to them with setup and tuning real close behind lol. Love if you'd share what you've learned with Alpha-N tuning. I played with it a little in the beginning of my tuning journey but I struggled and honestly touching timing tables scares the heck out of me!

@jimyang6951 2 жыл бұрын

@@biggboysouth yes, I agree. The gsxr itbs are becoming very popular in the mx5 community. I personally think they're way more easier to sync and to deal with. Yes, I'll definitely share all the information on alpha-n once I get real good at it. I'm one of those people who's horrible at explaining things. I'm better at showing it. Once I put up the video, I'll do my best explaining it ^_^

@biggboysouth 2 жыл бұрын

@@jimyang6951 Id greatly appreciate it! Main reason I went through the headache of setting up my ITBs on MAP was due to not wanting to re learn tuning as I just had gotten an understanding of Speed Density. Being that I love ITBs though I think it's pretty important for me to understand Alpha-N as well.

@sevshyyper6750 5 ай бұрын

how did you fill the holes with jb weld?

@jimyang6951 5 ай бұрын

I used barb 5/8 fittings as shown in the video. I put a little bit of glue on the barb fittings and sit it in the throttle (injector holes). By doing this, the barb fittings will remain in place, and it will be easier for you to fill it up with jb weld. As for the holes where the secondary throttle shaft used to be, I filled one hole at a time. Wait until the one you fill is dry and then move on to the next. I used coffee wood stirring sticks to mix and apply the jb weld. I also used Q-tips to clean off excess run offs. Make sure you use the jb weld that hardens up in 6 mins. Once completely cured, you can go back and sand it down to smooth it out. I hope this helps

@andrealosardo7257 4 ай бұрын

so you simply plugged the injector holes, are the 5/8 hose holders useless?

@berniegrunhaus3899 2 жыл бұрын

How do you feed vacuum to the booster?

@jimyang6951 2 жыл бұрын

I fed the brake booster vacuum one into the vacuum block (in video 7:20)

@berniegrunhaus3899 2 жыл бұрын

Awesome! Is your brake behaving as usual(normal intake)?

@jimyang6951 8 ай бұрын

@berniegrunhaus3899 sorry for super late reply. Yes, it's behaving like a full intake manifold

@MrTAKIS1984 2 жыл бұрын

Any hp gains?

@jimyang6951 2 жыл бұрын

No HP gains on my stock engine. If I had cams, up the compression & some more to the engine, I'm sure the itb would help a little with some HP gains. For now, just doing it for the fun driving experience.