Corey does his magic

[32valvesftw]

I picked up my 91 in March, it had Bola exhaust on it but was otherwise stock as far as I know. I removed the resonator and added an X pipe, then gave it to Corey H for headers and tune. Just got the dyno results 382 whp / 373 tq. Im impressed, I haven't driven the car yet but I can't wait to feel the difference.

[A26B]

That's about 450Hp at the crank. You'll feel that in the SOTP dyno! Tell him I said hello :-)

[FU]

Now let Corey hog out the plenum & injector housing's for 400+ RWHP.

[Paul Workman]

Yeah, it shows ta go ya just how stifled these motors are. The second gen LT5 made 550 hp on the engine dyno, according to Graham Behan.

Oh...the lost opportunities and possibilities....

[32valvesftw]

450 at the crank? I was thinking about 430, 12% drivetrain loss, but you guys have much more experience than me with these numbers.

[mike100]

There was documented evidence of factory dyno testing that showed 440 crank hp on a brake dyno when the engine had headers and an optimized tune for the '90 engines if I recall correctly. So... mid 400's is a good estimate. Headers seem to wake these cars up.

[32valvesftw]

Cool, the Corey effect adds the extra 10 hp.

[XfireZ51]

I have the utmost respect for Corey, but for a motor that starts out at ~ 335-345 rwhp stock, 40rwhp bump on headers and a tune sounds a bit high to me.
If it is there, it's outstanding work and Corey is the guy to do it.

[Billy Mild]

Comparison to the Haibeck tunes?

[Vette73]

Originally Posted by Billy Mild

Comparison to the Haibeck tunes?

Yes I would like to see the comparisons also....I remember when I did headers,exhaust and installed Marc's chip (was mailed to me from Chicago) I live in NY- the car def did pick up power..

450 crank horsepower? Seems a little high to me also since I'm guessing the tune is the same.....Not too familiar with the tuning process when it comes to chips........Goid luck with car...