I have a 93 firebird with a lt1. I have done many mods to the car allready which include shorty hooker headers and y pipe, msd ignition box and coil, 3" flowmaster catback exhaust (no more cat) and last but certainly not least ATI procharger P-1SC intercooled supercharger with 9lbs boost.
This winter I am installing a 12" moser rearend with 3:73 gears, a 3000 stall converter and shift kit (hey guys its only $$$$$ might aswell enjoy it while you are here)
I am running the stock injectors but have added a second high pressure fuel pump that came with the blower kit.
A.T.I says that 9 p.s.i. boost isok on a engine with stock internals, so I hope that it is not a problem that needs major surgery tobe solved.
Anyway back to my question. I didnt get the blower until late last year and did not have much opportunity to play with it too much but I did notice alot of detonation and im just woundering if any of you might have any suggestions what I might do to solve this problem.
The car does seem to run alot stronger but I do want to solve my detonation problem.
I have thought that possibly a custom burnt chip may be the solution to the problem.
Any input would be greatly appreciated.
Thanks Dave

 

You're running 9 lbs of boost on stock LT1 hypereutectic pistons, with stock tune, and stock injectors/fuel pump? I'm by no means an expert on forced induction, but I'm surprised it's still alive.

Might wanna try the boys over in the Forced Induction forum, I'm sure they could help you out.