jf951

is the borla alot louder? are the performance gains only above 5k rpm?
or should i just go to the junkyard and buy cat back for $100.00
mods 89s: 27/8 , maf, tial38, lfw, wfHG, bov, testpipe
(i could probably search this...ok i will but just wanted current opinions)
thanks.

944obscene

Neither. Spin Tech. Done! lol

As far as gains, anything that significantly reduces pressure in the exhaust, after the turbo will help up top.

rdanford

SFR Borla XR-1 sounds great...took the system out b/c I'd rather lisen to the motor...helps with reducing back pressure too