I just got finished with my install; my air pump broke replaced that now my PS pump is broke, (I must have had my belt on too tight) (Older Novi kit). But when the car was running I could get a peak of 7psi right before the factory 6250 rev limit and I must say I am not impressed with the performance increase. The car didn't miss a lick no hesitation and no bucking/surging just horse **** slow in my opinion for all of the work that I have done. I know that allot of it has to do with the fact that I cannot run anymore base timing than 6-7 or else the car will detonate like crazy and I am stuck with 91 octane fuel also I am located at 6200’ of altitude. I am going to get a boost timing control for it so that I can run more base timing. But just to give you guys an example of how the car ran,
I floored it in the first 3 gears and it almost feels like a weak turbo with all kinds of lag when its revved up it spools fairly well in between gears but this car feels like a mid-lower 14-second car.
I would say at this point the car gained 25-30 HP @ 3k+ and lost 15-20 under 3K.
A stock LS-1 would blow my doors off right now and that bothers me, after reading some of your stories of spinning through three gears after the install I was anticipating some actual gains. What should I expect after I install a BTM compared to what I have explained? Anyone else out there at higher altitude that could give me some tuning tips? I have an article from 5.0 Mag and they installed this identical blower on a stock 91 GT before the install they put it on a dyno it put 180HP and 270 FT lbs of torque, from my ET, and Trap speed that is about what I am putting down when it was all mostly stock in this mountain air. After the install they put it back on the same dyno and it put 270HP and 330 ft. lbs. of torque down with no other modifications, just the Paxton kit right out of the box. That’s 90 hp, compared to my 30~. A good friend of mine just bought a 98 Z28 with a 6 speed if I can’t beet him after some minor tunning and a BTM I am going to barf.
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