Just joined the forum after purchasing an 06 GTO earlier tonight. since exhaust is always the best place to start I have a couple questions. At what hp level should you consider going from 1 3/4 to 1 7/8? Most likely I will be going with 1 3/4 since I won't be doing any engine work for some time. What kind of RWHP increase has anybody on the forum seen?? I've done a search for all the kooks posts and couldnt find a post with a before & after. I'm guessing around 35rwhp.
Any good installers in Washington DC area for headers?
Also I read about that nasty strut problem. Where do I find out the build date of my car?
TIA!
Any good installers in Washington DC area for headers?
Also I read about that nasty strut problem. Where do I find out the build date of my car?
TIA!