Pulley gave the car a lot more low end torque. Kicked the boost from approximately 8 up to 10 1/2 pounds by the cars boost gage.
Going to put a 3" cat back, all the way out the back. Dual Hooker 3" Areo mufflers. Hope that will free up some more horse power on the top end.
From my drag racing days, our supercharged engines always needed free flowing exhaust and even less restriction on the intake side.
Dam, I hate California SMOG Laws.
I have read this forum for quite awhile, there is not a lot of forums out their for late model bonnevilles.
I can help you with smog issues and there are a few tricks you can do to help out. Intake wise I can give you a few choices with a range of costs. Exhaust I can help as well but my options are not custom. Where about do you live?