When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 2006 A6 that has an H-pipe from the factory. I added B&B Route 66 axle back system using the stock H-pipe. Then removed the H-pipe and installed an X-pipe from a 2008 Vette. Sound, and the hated drone, stayed the same. No change. Waste of time and money.
I think you would probably notice it more at WOT than just driving around town.
The X-pipe basically balances the exhaust flow, but doesn't do much for sound. It must be worth something though or GM wouldn't have made it standard starting in '08
I have a 2006 A6 that has an H-pipe from the factory. I added B&B Route 66 axle back system using the stock H-pipe. Then removed the H-pipe and installed an X-pipe from a 2008 Vette. Sound, and the hated drone, stayed the same. No change. Waste of time and money.
Talking of wasting money... I didn't know the '08 already had an X-pipe, so bought the full Stinger cat-back rather than just the mufflers - only realised when I picked up the old H-pipe...and discovered it was an X-pipe! D'oh!
Talking of wasting money... I didn't know the '08 already had an X-pipe, so bought the full Stinger cat-back rather than just the mufflers - only realised when I picked up the old H-pipe...and discovered it was an X-pipe! D'oh!
I had originally thought the same thing, but after looking closely at the Corsa H pipe and the factory H pipe there is a difference.
At the point the drivers and passenger pipes meet to form the H the factory H pipe seems to join under the weld. ( 2 into 1 then back out to 2 ) I think this is where you get the gases swirling together and a lot of popping with the factory pipe..
With the Corsa H Pipe where the L and R sides meet to form the H there is a distinct separation the pipes don't merge into one.
Unless of course the factory H pipe is dented in flat - butted side to side then welded. It's hard to be 100% positive without taking out the Reciprocating Saw.
Right now I have B&B mufflers, if I were to get a X-pipe would there be a increase in sound?
I have only used "x-pipes" that have a formed sheet metal "box" for the x-area rather than the siamesed pipe variety such as the corsa or borla. On my C5 I used a Bassani x-pipe and on my C6 it was a West Coast Corvette x-pipe. In both cases, the x-pipe actually lowered the exhaust sound level -- not a huge amount, but noticeable on both cars. The exhaust note was also smoother on both cars with the x-pipes installed.
It's only a guess, but I think the sheet metal box type of x-pipe allows more volume for exhaust gas expansion which may result in slightly lower pulse velocity through the mufflers.
Anyone have true dual exhaust on their C6 without a "X" or without an "H" crossover pipe? And is it a deeper "old school sound" ??
.
Yes, I do combined with a Borla S-Type 2 at the moment. You notice it primarily in stationary, as you can identify both cylinder banks. When driving, presumably a very small effect but close to H-pipe.
Soon the Vette will have headers, high flow cats and probably an x-pipe as well.