I just received my off road (no cat) H-pipes from Brenspeed. I haven't installed them yet, but I selected the H over the X because I spend 99.9% of my time driving down the road and enjoy listening to myself (my car that is). Call it vanity and chalk it up to the same reasoning as the sequential tail lights. I expect that the sound will be better than the X pipe, and the power almost as good.
__________________ '06 GT, manual, Satin Silver, lt. grey cloth int., IUP.
MODIFICATIONS - Goodyear F1 GS-D3s; 245/45 on 18x9, 275/40 on 18x10| Progress Technology springs & sway bars| Steeda adj. panhard bar, panhard brace, front control arm brace & bushings| strut tower brace| Tokico D-Spec dampers| CHE adj. LCAs & BMR relocation brackets |drilled & slotted front rotors| C&L intake| BamaChips SCT tune| FRPP 4.10 ring & pinion| Pypes off road H-pipes| FRPP GTA mufflers. |