2008 Corvette X-pipe
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St. Jude Donor '05-'06-'07-'10
I don't think that is correct. The NPP is a direct bolt on to stock systems. The only diameter difference in pipes are the Z06 to the base C6. The tips on the NPP have a larger diameter than those of the base tips but it does not carry through to the mid pipe.
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They are supposed to be better. The only advantage comes in the reduced flow and backpressure at the crossover. You can see in the photo above that the exhaust gasses would take a sharp turn at the "H" in order to balance. With the "X" crossover the the flow would be less restrictive.
This all is contingent on the X/H pipe being the most retrictive portion of the exhaust at that point. The X pipe will reduce the burble and pop of an aftermarket exhaust. The 2005-2007 intake and exhaust was tuned with the H pipe in mind so I'm can't imagine any gain with an X pipe on the older system.
This all is contingent on the X/H pipe being the most retrictive portion of the exhaust at that point. The X pipe will reduce the burble and pop of an aftermarket exhaust. The 2005-2007 intake and exhaust was tuned with the H pipe in mind so I'm can't imagine any gain with an X pipe on the older system.
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St. Jude Donor '05-'06-'07-'10
I couldn't see spending any extra money on an aftermarket x-pipe vs. the factory solution if you own a 2008.
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Melting Slicks
Joined: Jun 2008
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From: Scottsdale Az
The factory X-pipe is a stamped/welded X-pipe. It is made of sheet metal in two halfs and welded together. Any aftermarket (Corsa, etc.) x-pipe is going to be extruded tube, formed and welded. It will start life as a tube, be cut and then joined at the "X". In terms of flow, I can't imagine that either one would be better than the other. The nod may go to the tube over the stamped for efficiency but only very slightly.
I couldn't see spending any extra money on an aftermarket x-pipe vs. the factory solution if you own a 2008.
I couldn't see spending any extra money on an aftermarket x-pipe vs. the factory solution if you own a 2008.
thanks for the answer...
Melting Slicks
Joined: Nov 2007
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From: McKinney, texas DPD Sergeant
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Pro
Joined: Apr 2008
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From: LONG ISLAND NEW YORK
My Stock exhaust with the stock X pipe pops plenty!!!
Le Mans Master
Joined: Mar 2007
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From: Mission Viejo CA
I only notice burble and pop when the flaps are open all the time.
But after jet engines, shooting without ear protection when growing up, and sitting a bit too close to the stage at rock concerts have put a dent in my hearing.
But after jet engines, shooting without ear protection when growing up, and sitting a bit too close to the stage at rock concerts have put a dent in my hearing.
Last edited by RRVettes; Jul 6, 2008 at 01:29 AM.
Safety Car
Joined: Jul 2001
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From: Houston, Texas
St. Jude Donor '20-'21-'22-'23
They are supposed to be better. The only advantage comes in the reduced flow and backpressure at the crossover. You can see in the photo above that the exhaust gasses would take a sharp turn at the "H" in order to balance. With the "X" crossover the the flow would be less restrictive.
This all is contingent on the X/H pipe being the most retrictive portion of the exhaust at that point. The X pipe will reduce the burble and pop of an aftermarket exhaust. The 2005-2007 intake and exhaust was tuned with the H pipe in mind so I'm can't imagine any gain with an X pipe on the older system.
I wonder if it would sound better, as in more of a true deep classic muscle car sound,
with no X-pipe or no H-pipe at all...just a true dual exhaust with no crossover at all???
Maybe even have less burble and pop with no crossover???
.
Safety Car
Joined: Nov 2007
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From: Bay Area CA
I thought I read differently, so all new base vettes come with the same pipe diameter and only the NPP tips are larger. Are the base corvette pipes 2 1/2 inch in diameter, with the Z06 at 3 inches?
Last edited by Mike's LS3; Jul 6, 2008 at 11:43 AM.
Burning Brakes
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From: Seguin Texas
Melting Slicks
Joined: Nov 2007
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From: McKinney, texas DPD Sergeant
it just doesn't sound right w/o H or X pipe. i believe viper is like that, but that's a whole different animal
Team Owner
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From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas
St. Jude Donor '05 thru '26
Le Mans Master
Joined: Oct 2005
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Funny thing is, the Viper has a "crossover" on the pipes, they just don't mix.
Drifting
Joined: Sep 2005
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From: Gilbert AZ
08 vipers have no X pipe at all, they don't even connect. Older ones have an Xpipe which is one of the primary reasons you have all the heat issues in the cabin. First thing I did with my viper was eliminate the X pipe.
Burning Brakes
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From: Seguin Texas
