X pipe crossover pipe

Curt,

Need dyno work to know that for sure, and then the dyno work will only be good for the one engine in the test vehicle, comparing the 2 exhaust systems that were tested.

But here's my thoughts. An "X" pipe is superior to an "H" pipe because the "X" pipe effectively allows all the cylinders of a motor to exhaust through both tail pipes, through 2 mufflers instead of one. An "H" pipe only equalizes pressures & pulses, it is effective at making the exhaust quieter & less boomy, which is why the auto makers always install "H" pipes. The longer the crossover of an "H" pipe, the less effective it is at improving performance.

The Pantera exhaust system is so short, back pressure is not much of a problem once proper sized tailpipes and free flowing mufflers are installed, so the need to exhaust through both mufflers is not as great. On top of that, the exhaust crossover would be so long, its effectiveness has to be compromised, as far as helping performance any.

However, I'm a big fan of quiet, anything that makes the Panteras interior more quiet is OK with me.

Bottom line though, I have learned, it is easy to make false assumptions & the chassis dyno is the only way to separate fact from fiction. So somebody who builds Pantera motors for a living will have a more educated answer for you.

Your exhausted friend on the DTBB, George