Originally Posted by 9t8z28
Did you add or change out the fuel pump and install injectors?
We installed 65lb injectors.
The car picked up 158rwhp, I'd say thats pretty good. Remember, this is an L99 that made 314rwhp stock. Haven't dyno'd a header only camaro, but I can tell you, that we just Procharged and custom tuned a Challenger and made 515rwhp, then added LT headers and HF catted mid pipe, redyno'd at only 2 more rwhp...but sounded great.
Don't know if the Camaro's are the same, but most of these new cars have decent flowing exhaust systems. JMO