How important is equalizing the pressures between both sides of the engine with some sort of crossover or y pipe? Is there power to be had from it over just strait out the headers and if so how does that work?

 

Don't have any idea how it works but using a balance tube or an x-pipe can build a little low-midrange torque in my experience. Doesn't seem to do much up top, though.

 

Thanks, anyone else?

 

why? true duals tend to get better power most of the time

 

oh Im not asking is a y better than an H or x im just wondering if they have any advantage over strait headers and why...

 

I would assume it would have to do with exhaust scavaging and velocity

 

Hmmmmm..... can't recall ever running an h-pipe with open headers. When I run open headers I usually just put a couple lengths of striaght pipe about 16" long, as space permits, on the ends of the collectors- helps scavenging to have some pipe sticking off the end (again, don't ask me why).

I can't imagine an x or h pipe would do much with uncorked exahust, but I've never tried it.