Hello i'm a first time poster and need some advice.
I have a 04 grand prix Gt. 3800 and i have put a ram air hood on as well as a k&n cold air intake on.
with everything else stock i have found that every time i put the peddle down the engine is pinging like the timing is out.
It never had this problem till i put the cold air on.
Could this be because of the original exhaust?
Regular fuel?
Any ideas, from this mod,would help
Thanks