I just bought a red '95 with a greddy t78 set-up. Has a Apexi pc. Any ideas about what kind of power this car makes? It looks like it was a 1/4 mile car. I plan to go to the dyno after doing some minor fixes and tune it then. It has a 8lbs spring and is boosting to 14 now on the Greddy controller. Thanks

 

Welcome to the forum.

If you search through this part of the forum you will see that most T78s make around 400-440 at 15 psi. With lots more room to grow in the higher PSi range.

Just make sure its tuned.

 

i saw one make 350 whp @ 10 psi, but it was too lean (afr in the 12's). ended up being 330 @ 10 psi and 430 @ 16 psi.

 

depending on whether your motor is ported or not, and how well it is tuned you are prolly somewhere in the 370-400 range. Most people make between 380-420 right at 15 psi. Of course, some people make more....

 

porting, air temps, etc.....everything depends on everything.

 

I have a reman with about 25k on it...stock ports etc and I made about 417rwhp and 345 torque @15.5 psi and i run cosmo pump with 550/1600's inj and pfc...great turbo with tons of potential

 

I am in the middle of getting mine going now, i bought it T78 kit 2nd hand and am nearly finished. Just fitted a HKS AIC as i kept the standard injectors and had 4 welded onto intake . will be running PFC aswell. Hoping to hit 450 mark

 

Thanks for all the positive feedback and info. This car cannot be making that much HP. I will get dynoed soon and hope to see that much HP. I am in the process of building/paying/for a 20b third gen and this car is my learning curve driver. I have to say that it is a blast to drive but I hope to see bigger gains in the 20b. If I do not hit 500 whp I will be unhappy. Thanks again.

 

Lmao

 

i have a street ported motor done by pfs with a t-78 and dual pump.yd di ya da....fuel, at 22 psi it made 526 whp/400 tq. i m waiting on ray to send me a dyno sheet so i can post it. i think it made 42x.00 whp at 15 psi. 20b? i hope you can bank roll this project. kevn

 

I thought at 10 psi your a/f should be at around 12's right? Here is the A/F taget for boost

0 psi= ~13.0:1
0-5psi= 13.0-12.7
5-10psi= 12.7-12.5
10-13psi= 12.5- 12.0
13-15psi= 12.0-11.5
15-17psi= 11.5-11.0

 

This was my first tune witht he t-78 before I went with the t88. this was on done on 10 or 13 lbs I dont remember its been awhile.

 

i had 375hp @ 15lbs on a stock motor
A friend of mine had 431hp @ 15lbs on a large street ported motor (after the tune)
with the 1/2 bridge i got (www.jhbperformance.com) non tunned i got 471hp @ 18.59lbs

WHEN I FIRST GOT THE CAR IT DYNOWED WITH 312 @9-10lbs

 

16 psi 440 , got these today on 93 Octane

 

whats the highest boost
youll go on 93

 

You wouldn't want much over 16psi without race fuel.

 

Right now I'm on a 8lbs spring and with boost controller on it's at 16. I'm keeping it off until the car is dyno tuned. I'd like to run around 10 to 12 and see mid 300's. Going to go to a NASA lapping day at Moroso on 5/20 and see what kinda times it can turn.

 

you shouldnt have any problem being in the mid 300's with 12psi...good luck and let up know how it turns out...and those lap times

 

Well...the dyno read 296.6 on the 8lbs.spring. We played with the fuel mixture w/o much change in hp. The the Apexi, dyno and tach all had a different reading on the revs. So we just went for a baseline setting. Going to Moroso in the morning for a lapping day and plan to install the tricked-out intake JR has made for the car this week. If Iwe don't see at least 10 to 12 percent increase on the dyno we'll just quit!!!

 

good luck with your 20B project and please post your dyno on the T-78 turbo set up as i'm really interested what kind of horsepower are you getting at 20 psi. update me on that.

 

I went to Moroso today and lost my brakes at 140mph going into turn 2. What a shitty feeling!!!! I came to a rest with the rear wheels on the top of a tire wall and the nose buried in the sand. Shut the car off and started cussing my *** off for the damage I was getting ready to see. Waved to the corner worker as I was getting out ( on the top of a tire stack 5 tall!! Noticed no damage on the driver side...slight upward lift on the front bumper skin.....walked around and saw a $400 "paintless dent removal" on the 1/4 panel and a ton of rubber transfer on the rear bumper. Wholly ****!!! A fork lift picked up the front-end from the side right on the engine subframe until it was level and the flat tow slid the bed right under it to the rear tires. Fired it up at the paddock and was able to DRIVE IT HOME!!! Did not even screw up my alignment. All I need to do now is get the 5lbs of sand outta the interior and all the tire rubber off the door, 1/4 and rear bumper.

 

Sweet, glad to hear you didnt bend anyhting.

But this is why I am a chicken and will just hit the drag strip for a while.

 

At Moroso I turned a 1:42 on street tires and was shocked to have a Caddy cts-v on my *** the entire time!. The guy could drive into turn two with me at around 140 and brake just as late! Gotta love those Brembo 6 pots. The guy had a light flywheel,chip and exhaust...the rest was stock. He even had a baby seat in the back. I guess Pilgrim and GM have it going. We'll see what we can do with the new intake tricks soon.