X-Pipe question
Thread Starter
7th Gear
Joined: Mar 2007
Posts: 7
Likes: 0
X-Pipe question
I have a 2006 A6 with a GHL axle back exhaust. No headers and do not plan on adding any. However I am thinking about adding an x-pipe and wonderd what was my best option. Also what effect, if any, will this have on "drone"?
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
You already have an H-pipe
Which is to equalize left/right bank exhaust resonance in addition to "theoretically" balancing the exhaust & thus improving flow/scavenging effect, but the stock H-pipe I understand is not the full 2.5 diameter inside limiting it's capability of doing either very well, but does a better job on balancing resonance. A "real" X-pipe should improve both & go from theorectical flow improvement to actual, but no noticeable perf. improvement (on a stock LS2). At some point they started coming on stock C6s, so if someone who's gone full exh. route & has one laying around to give or sell would be your best option (bolt on & cheap), plenty of aftermarket X-pipes available to fit, more labor intensive than anything else due to cutting & welding. Call George at Kooks & see if he has any advise on both what & will it accomplish goal, he will undoubtedly know both. I use one in combo w/ complete exh. system, & believe they're worth doing, but I'm not so sure you're going to accomplish a terribly significant improvement w/ drone. Keep us posted, I'm sure folks would like feedback on the results, I'm curious myself. Good luck.
Last edited by Mike V.; Feb 14, 2011 at 12:21 AM.
Premium Supporting Vendor
Joined: Aug 2004
Posts: 496
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From: Phoenix AZ
keyplyr and Mike V have provided a lot of good information on x-pipes and their advantages. Basically the main purpose of a crossover is to better balance the exhaust pulses between the two cylinder banks. The H-pipe does help with this however it is not real efficient. A properly manufactured X-pipe will help clean up the exhaust note and provide a little more performance. You can read more about out X-pipes at www.bbexhaust.com or give us a call at 888-228-7435.
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David Merkel
Marketing Dir.
Billy Boat Exhaust
David Merkel
Marketing Dir.
Billy Boat Exhaust
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From: Amityville ny 631-608-1986
PHUN4US, I believe adding an X-pipe to any typical V8 whether through headers or manifolds is a step in the right direction but real power gains come from headers. I'm not sure you'll see the real advantages an X-pipe provides while running through stock cats. X-pipes thrive on signal which gets interupted as the exhaust pulse crashes into the cats. This is why we place our X-pipe ahead of the cats on our header systems.
Just curious, why wouldn't you consider a quality header system? It's easy to install and can be brought back to stock if necessary just as easily. If I can address any concerns let me know. Thanks
Nick
A.R. Headers
Just curious, why wouldn't you consider a quality header system? It's easy to install and can be brought back to stock if necessary just as easily. If I can address any concerns let me know. Thanks
Nick
A.R. Headers
Burning Brakes
Joined: Aug 2008
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From: Oro Valley AZ
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From: Phoenix AZ
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Verdad Gallardo
Team Owner
Joined: Oct 2004
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From: San Clemente CA
In California you can do anything you want after the cats as long as it's not too loud. 
Retired & lovin' it!
Joined: Mar 2005
Posts: 4,475
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From: Jackson NJ
PHUN4US, I believe adding an X-pipe to any typical V8 whether through headers or manifolds is a step in the right direction but real power gains come from headers. I'm not sure you'll see the real advantages an X-pipe provides while running through stock cats. X-pipes thrive on signal which gets interupted as the exhaust pulse crashes into the cats. This is why we place our X-pipe ahead of the cats on our header systems.
Just curious, why wouldn't you consider a quality header system? It's easy to install and can be brought back to stock if necessary just as easily. If I can address any concerns let me know. Thanks
Nick
A.R. Headers
Just curious, why wouldn't you consider a quality header system? It's easy to install and can be brought back to stock if necessary just as easily. If I can address any concerns let me know. Thanks
Nick
A.R. Headers
Originally installed Corsa Sports with the Corsa X-Pipe on my '05/Z51/M6. Nice improvement in exhaust note, but couldn't detect any real performance improvement. Then went to AR headers & tune done by ECS in NJ.....immediate REAL seat-of-the-pants improvement. I would highly recommend that's the way to go.
