I found a guy that was selling rebuilt superchargers for 3.8 GM engines. I have a 2001 3.8 grand prix GTP. The bearings went out in the original supercharger so i decided to just buy a rebuilt supercharger and slap it on instead of rebuilding the original one.
Now that i have the new supercharger on i have alot of hesitation or stuttering when i apply boost in high gears. Also it has the same stuttering problem in low gears if the engine is over 110 degrees. I Used 108a autolite spark plugs when i did the tune up. i have checked the fuel line.
What could it be? i am thinking that since i have more air feeding the engine i need to have more fuel for the combustion. Should i look into a new ECU? could it be that im blowing the spark out with the new amount of boost?
