sgt1020 Posted March 12, 2010 Report Share Posted March 12, 2010 I just found out that the GT-500KR has an H-pipe not an X-pipe. I thought the X-pipe made more power and flowed better than the H-pipe does. Does anyone know which one produces more power and sound? The Shelby GT's have an X-pipe, how would they sound with an H-pipe? Link to comment Share on other sites More sharing options...
lawdude Posted March 12, 2010 Report Share Posted March 12, 2010 Don't know about an after-market H pipe, but Lethal's X pipe is loud enough to frighten most unsuspecting carbon-based life forms. Link to comment Share on other sites More sharing options...
LGSchmidtJr Posted March 12, 2010 Report Share Posted March 12, 2010 I seem to remember reading that the h-pipe was designed for low end torque and the x-pipe was designed for the top end. Furthermore, the x-pipe has more of an exotic sound where as the h-pipe has the classic V8 sound. Laurence Link to comment Share on other sites More sharing options...
sgt1020 Posted March 13, 2010 Author Report Share Posted March 13, 2010 According to Shelby, The H-pipe makes more power with the larger engines (5.4L). The x-pipe produced more power on the smaller engines (The 4.6L) Link to comment Share on other sites More sharing options...
TurboShelbyGT Posted March 15, 2010 Report Share Posted March 15, 2010 I'm doing some work to my SGT now. Trying to find parts and information is pretty tough, which is surprising. I bought a set of used exhaust manifolds and ported them at our shop and they are being ceramic coated. I didn't want to mess with headers of any kind. Tonight I pulled the cats off the car and I really want to retain the exhaust that's on the car but it's just a tad too quiet. So..........I am going to build offroad pipes for the car and keep my stock cats intact. It will be interesting to hear it with the Xpipe, stock exhaust and no cats, I'm hoping it's just what I am looking for. My car has a Whipple 550 on it now. Link to comment Share on other sites More sharing options...
ingram4868 Posted March 15, 2010 Report Share Posted March 15, 2010 I can't speak about the SGT but on the GT500 the X pipe produces more HP. The H pipe was selected for the KR for the sound quality. Link to comment Share on other sites More sharing options...
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