H pipe is just as loud as an x. They're just not raspy and have a deeper, rumble ur balls kind of exhaust note LOL. X pipe you only get that 3 extra hp in high rpms. H pipe has more low end torque. Nothing really noticeable at all in terms of a difference of power between the two. I have an h pipe and I love it! decide purely on the sound you prefer. I don't like the raspy-ness as much, that's why I went h. Many ppl love the raspy sound tho so it's all opinion. Either way o/r mid pipes kick ***!
Engine/Drivetrain: SCT iTSX with BAMA 91 Race Tune, Airaid CAI, JBA O/R H-Pipe, SLP Power-Flo Catback, Exedy Stage 2 Clutch, Exedy Lightweight Flywheel
Suspension: H&R SuperSport Springs, KYB Shocks & Struts