Today I went to the dyno to tune my car. The best run that I had a print out of is 332rwhp. I'm using a HKS S-AFR to adjust the fuel. But right now I need larger injectors. The stock 550cc injectors are too small. It's running lean, but not dangerously so, unless I wail on it such as on a road course. It'll live until I can do it right. I have low impedance 720cc injectors, but I can't find the proper resistors to make them work. I think I'll go to RC Engineering to get some proper high impedance injectors larger than 720cc to be on the very safe side.



My car is an '89 T2 with a stock port engine. Intake, full 3" exh., 255lph Walbro fuel pump, Knight Sports FCD, HKS S-AFR, Profec B, and the turbo is "special" but essentially stock. It's a BNR Supercars Stage2 turbo with the works that started life out as a kouki T2 turbo that I picked up for dirt cheap in Japan.



No, I don't have a scan of the printout. I'll be going again next week to do some fine tuning with extra fuel. I'll have the larger injectors then. I tune it to last and not for power. But having the power is pretty cool https://www.nopistons.com/forums/pub...#>/biggrin.png

wow you have the same power as turborotor. his car is damn fun to drive https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Damn.. I hope I can get that type of power from my T2 engine for the repu..

Congratulations....That is mad power YO!

Thanks. I'll be back to the dyno next week to fine tune with more fuel. I'll scan and post those dyno sheets.

Very cool, congrats man. https://www.nopistons.com/forums/pub...#>/BURNOUT.gif

Nice...I need that kind of power out of my TII.

Nice! Good to hear you got the turbo on. It's about damn time!! How much boost were you running for the 332 rwhp?

Good numbers with a the hybrid i think right? But what PSI?



C

Great job man. https://www.nopistons.com/forums/pub...1047683827.gif I've gotta get my FD non-stock.. https://www.nopistons.com/forums/pub...1047683664.gif

It was hitting 15psi by 7k. The EBC had nothing to do with that. Yep, boost creep. The wastegate on this turbo is ported as far as it can go. It still can't keep up with the airflow. I'm not sure what to do next. Maybe the infamous cheatergate that's used too often in Japan by ghetto racers. It'll sound like an external wastegate without the control. But it should allow some more flow. I dunno. https://www.nopistons.com/forums/pub...1047683561.gif



I guess the turbo is called a "hybrid" over here, but I still call them "hi-flo" turbos. Force of habit from learning what I know about cars when I lived in Japan. To me a "hybrid" turbo is one that has two different turbos mated but neither one has anything to do with the original. A "hi-flo" turbo is one with just an upgraded compressor housing.



But I will have 4 720cc injectors in it soon. At least I won't have to worry about running lean. https://www.nopistons.com/forums/pub...IR#>/blush.png

that is how my 89 TII blewup. hybride T04 S5 turbo @ 15psi .. goddamn it was fast for those two whole days https://www.nopistons.com/forums/pub...#>/biggrin.png

Sweet! Lately I have seen some good hybrid numbers.....

whoah, that's damn impressive. I don't see a FMIC in your mod list though...did you just leave that out. 15psi on a hybrid compressor and those intake temps on the stock IC would be insane!! Sweet power though.



As far as the creep goes...why can't you just grind out the bridge between the 2 wastegates and make one giant oval shaped wastegate and then weld on a big oval flap to match?

lmao. https://www.nopistons.com/forums/pub...#>/biggrin.png

No FMIC yet. I have the "small" 16 row Isuzu NPR I/C. All I have to do is fab up some 2.5"o.d. piping to work it in.



That's an idea with porting out the wastegate. But to do so, I'll have to have my car down for a while now. It's my daily driver after all. Right now I'll just deal with it. https://www.nopistons.com/forums/pub..._DIR#>/sad.png

so what mods do u have on the fuel side? u have all 4 550 cc injectors making 332 rwhp?

fuel pump? at what pressure? in the rail?

Stock injectors. Knight Sports FDC. Walbro fuel pump. HKS S-AFR controlling the injectors. Stock FPR.



After 5500rpm the a/f starts to lean out. But as long as I stay off the boost it'll live. That's easy to do with the silencer tip in. I can't flow enough exhaust through it to make more than 4# of boost. People were telling me that it was impossible to make 265rwhp with the stock turbo and injectors. I did it and the car was still running fine. Those people are tools I tell you! I have lot more power now and it's still alive. I just will take it easy until I can find time to skip out of work and hit the dyno again with the 720's.

oh yes I remember seeing the 265 rwhp dyno @ 1 bar over on the other forum. Very impressive, and 15 psi on a hi-fi turbo with stock TMIC pulling 330+ rwhp is down right awesome. Get that thing tuned. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Damn...can't edit post so I must post *****:



Kahren....didn't you post up a dyno of one of your friends over on rx7club. If so I recall you had quite an attitude and assumed anything over 8 psi on the stock system even with a walbro would blow up the 13bt. Well I finally got my car on a dyno. Running 11 pounds all the way I was actually rich on the top end. 11.3:1. Your apology is accepted https://www.nopistons.com/forums/pub...R#>/tongue.png

there is no way in hell i will apologize https://www.nopistons.com/forums/pub...#>/biggrin.png

it ISNT possible on all stock 550 cc injectors and ~40 psi stock fuel pressure period.

if u are runnign abotu 75 psi of fuel pressure at the rail and the injectors at 100% then u can get that number

with the stock injectors, anythign less and are leaning out...

congrats

Heh...ok whatever. I'm not going to create another 5 page long thread on the benefits of the walbro vs. fuel pressure. I guarentee I'm not running 75 psi fuel pressure, but it's probably a good 10 psi over stock. Not to mention the stock t2 fuel map runs really rich. :shrug: I think we'll both agree that it's good to ditch the stock ecu and go stand alone as soon as possible anyways. https://www.nopistons.com/forums/pub...IR#>/boink.gif https://www.nopistons.com/forums/pub...1047683329.gif

standalone is not always better https://www.nopistons.com/forums/pub...1047683358.gif

by looking in your signature it says u have 232 whp its far from 332

232 i belive with just a fuel pump to be berely enouf without touching the FPR

scan the dyno!

I have the stock FPR. Just a Walbro, FCD, HKS S-AFR for the fuel. Stock fuel pressure.



I had a few nice blasts passing traffic going over a mountain pass this afternoon. 60 to 120 in less time than it took me to type that. https://www.nopistons.com/forums/pub...#>/biggrin.png Lots of flamage too according to my buddy that was behind me.

I gotta see this dyno.

WTF??? I wana see A/F sheet and EGT numbers....



you're not gona last more then a few days like that...



330 RWHP = https://www.nopistons.com/forums/pub...R#>/bsflag.gif

Well, he drove the car to the Apple Blossom Festival, and that is like a 3 hour drive there, going over a mountian pass. Plus he was driving with other 7 owners, so I'm sure he wasn't going the speed limit and driving off boost. And he was making 265 rwhp befor putting in his hybrid turbo...

https://www.nopistons.com/forums/index.php?...=63&t=9777&st=0

he only said 332 once........so maybe it was a typo...plus after everyone calls him bluff, he doesnt make any comment



stock fuel and turbo will not give you that power....what the car makes like 180 rwhp stock....an upgraded turbo and stock fuel wont get 150 rwhp....

i think if you push the stock fuel system you can make about 280whp at the extreme limit. That being said, we all know that a hybrid turbo is capable of 330+whp with enough fuel. Crazier things have happened, with enough basefuel pressure it may be possible to squeeze power out of his setup, who knows. He really has nothing to gain my lying about his numbers, I'd like to see what that turbo would do on my car though. Where can i get one on the cheap?

I for one believe him, I just can't believe his motor is still alive. I remember the 265 rwhp dyno on the stock turbo at 1bar from a while ago being posted on rx7club. If I recall correctly he was out of the country for a couple of months but he had been driving the car for a long time under that condition.

To all the tools and people that don't know jack but love to type - Oh, I'm sorry soooo sorry I haven't been catering to your needs. Now go fudge yo'selves. https://www.nopistons.com/forums/pub...1047683431.gif https://www.nopistons.com/forums/pub...DIR#>/wink.png



332 is no typo. There was a 334rwhp run, but I never had the printout made. I'm not scanning the dyno sheets. Waste of time. I know how to read them and I don't need every tool on this site to tell me what I already know. This is the sort of crap I expect from the "other" forum. It's going lean over 5500rpm that's for sure. But the motor is holding strong. EGT numbers? The dyno doesn't do it. A/F numbers? Not where I want them to be but they're livable. I sure won't wail on the car until it's where I want it to be. I don't get on the boost everyday. But It's lasted a month already. Last weekend was the only time I really got on it since the dyno tuning session. I haven't had the time to put the 720cc injectors on the car yet and take it back to the dyno. I do work during the day after all. Please feel free to read (or re-read for some) my orginal post. Some of it might sink in for some of you that are calling BS. It's not a 100% stock fuel system. FCD, Walbro, and HKS S-AFR. But the inj. and fpr are stock for now. About the turbo? It's not stock. For those of you that require to go back to a remedial reading class, go and re-read my first post and try to do it slowly so you don't miss any of the really tough words. https://www.nopistons.com/forums/pub...1047683785.gif



The dyno sheets I do have are dirty and scribbled all over. They were only printed out at the time to write notes on. I'm not too inclined to go way out of my way to scan them just to prove myself. My word is good enough. But if you're in the region and care to see them in person, they're floating in my car. Most of the local rx7club, club4ag, and northwestnissan bubbas have seen them by now.

i had enough fuel in my fc (fcon, fd pump, hybrid) to do like 13-14 psi, usually ran it @10-11 though.



mike

Heck, I'd like to run 9# (daily drving and track) and 12# (just to lose suckers that are tailgating me on the highway) at will. But I'm still getting boost creep even with the wastegate getting ported out to the edges. I thought porting the wastegate out would be the end of my boost creep. Guess again. https://www.nopistons.com/forums/pub...1047683664.gif Maybe it's just my car's way of pushing me towards a nice little T04S with an external w/g. Who knows? I take my time with doing things like that. This hi-flow turbo I just put on was sitting around for 10 months until I felt my car was ready for it.

i could keep mine to about 11, unless it was really cold then it would be more like 13. stock wg too. are you still using the boost solenoid? maybe bypass it?



mike

don't worry. nobody believed i ran 13.7 with the stock catback https://www.nopistons.com/forums/pub...#>/biggrin.png

not bad not bad. I ran a 13.9@103 with the stock catback https://www.nopistons.com/forums/pub...R#>/tongue.png

i ran 13.7 @100 with stock catback

and 13.8 @ 101.5 with apexi n1 blowing the engine and worse launch https://www.nopistons.com/forums/pub...DIR#>/wink.png