Quote:
Originally Posted by maxdmax
So the good thing we are on par with the pulley size at 3.4 and both were or are at 7.5 PSI. We upgraded my fuel pump and injectors when we went to 9.5 PSI. The difference in RWHP I would bet is that the tuner could not get the fuel to give you what my tuner was able to do with my car having a dual LPE fuel pump and bigger 65# injectors. My guess is you have your belt slip fixed and are running out on fuel and injectors. When you go with the OD back pulley I would either pulley up to a 3.8 and drive it or do a 3.6 and check the tune to be sure you do not max out your injectors or fuel. Then again you could just get a big fuel pump and 65# injectors and do the 3.4 with a tune and put down some big numbers LOL. Good luck!
OH on the factory freak thing, it is just that our cars make a couple of pounds less boot than most, this could be the cam, headers or a tune or a lot of other things not really a freak thing. Given my car is the same as yours does not make it a freak thing and I have seen a few others like this as well. I think most of them were RPO cars too, who knows maybe GM did a little something different on the first bunch of cars or something. Who knows, but to me it is a good thing.
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Got it.
I wonder if a bigger pump and injectors would actually make me more power? The car would have to be automatically nannying the tune because of running out of fuel which would NOT be a good thing.
I've got a good set of XA coilovers that I am going to sell to help pay for a pump and maybe injectors. But that's my next move. Gotta get my fuel right.