Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

Christ · 10-19-2009, 05:06 PM

So basically, putting an X-pipe right in front of the engine just isn't ideal at all... I'd have about 12-14" of pipe before the x-over point.

This is a part of exhaust that I'm not totally familiar with, if you can't tell... the dynamics of changing pulse properties elude me, to say the least, and I haven't found a good study or read on it that would suggest optimal placement on such a configuration.

I have some space under the bike that I could use for a cross-over, but that would mean tighter bends in the later sections to get into the mufflers, although I could also make the tighter bends from slightly larger diameter pipe to ease flow restriction, I guess.

Does any of this seem vaguely correct?

10-19-2009, 05:06 PM	#5 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	So basically, putting an X-pipe right in front of the engine just isn't ideal at all... I'd have about 12-14" of pipe before the x-over point. This is a part of exhaust that I'm not totally familiar with, if you can't tell... the dynamics of changing pulse properties elude me, to say the least, and I haven't found a good study or read on it that would suggest optimal placement on such a configuration. I have some space under the bike that I could use for a cross-over, but that would mean tighter bends in the later sections to get into the mufflers, although I could also make the tighter bends from slightly larger diameter pipe to ease flow restriction, I guess. Does any of this seem vaguely correct? __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"