X pipe H pipe or side by side

And how much do you think a 6" piece of pipe weighs? C'mon. And actually the bigger the engine the better the effect, as the exhaust needs to be bigger, so too will the scavenging effect.



We didn't stop trying to figure out how. I just dunno how many more times I can explain it to you without you getting it? What about it are you not quite understanding ir3333?


This is exactly what I am saying. If the h pipe adds volume and it picks up HP, you either need a bigger primary tube, a bigger or longer collector, or a combination of any or all of those things.

Those x and h pipes are a band aid in most cases. Unless of course, you are trying to run down joe Gibbs for the money.

Funny thing is, I never see Comp guys or even most fast bracket cars don't use them. Unless they are required to use a full exhaust. Then maybe, because of rules, it would help.

As I pointed out, if the SYSTEM is correct, most likely you won't find a gain, and will probably find a loss.