|
1)if you want to notice a difference in power do it all at once 2) your already down there taking the exhaust of why not go one step further....but you don't have to you could just do it as you get the parts
__________________
2006 black cobalt ls
17'' MB drifter wheels, blacked out taillights, debadged, 1 12" kicker sub, 2 6'' 1/4 kicker front speakers, 2 1/4" custom exhaust, eibach pro-kit
|