The system would be total ineffective if there was not an opening bewtween the two pipes. Just think of it as an extream "H" pipe without those nasty 90 degree turns for the exhaust pulse to fight with.
That's my point, a lot of X pipes look like they don't have a fistula, so I thouht a lot of them were just pipes bent and welded by noob exhaust people that thouht they could make X pipes. I didn't mean to offend or anythin, it's just you said there was a brace between the halves. So it sounded like even if there was a hole, they welded a piece of metal between and that filled it up.Mike Goble said:The ones you get from Dr. Gas have a brace welded between the halves.
So you're saying that I implied that you would think that because the Dr. Gas units units are braced that they don't have a fistula? How would they work? Osmosis? Tympanic coupling?
Speaking of PIR, I was surprised that my 2.5" x-pipe system just barely meets their post-10pm noise limits at WOT. I think this is more due to my muffler choice than the exhaust system though x/h pipe detail though.Ok,
I need to meet a db requirement at our local track (PIR) and which one will generally have lower db's at the top end?????