X-pipe options?
Thread Starter
Burning Brakes
Joined: Sep 2014
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X-pipe options?
The car sounds great stock, just want to give it a bit more and I think an x-pipe would do that. Its a cheap solution without have to tune and void warranty I believe. Any options?
Melting Slicks
Joined: Aug 2000
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From: Phoenix, AZ USA
The car sounds great stock, just want to give it a bit more and I think an x-pipe would do that. Its a cheap solution without have to tune and void warranty I believe. Any options?
Race Director
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From: Fulshear, TX
Melting Slicks
Joined: Aug 2000
Posts: 2,611
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From: Phoenix, AZ USA
I think he's wanting to upgrade his stock X-pipe to an aftermarket to add a little more bark to his exhaust.
Thread Starter
Burning Brakes
Joined: Sep 2014
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Of course it will and I do own one. There are cats in the x-pipe. When you remove the aft cats and replace with an "off-road" or catless x-pipe, sound will be significantly increased. With the stock NPP already sounding so good. A catless X will as the above poster said, give a more bark. It's a really inexpensive way to increase the sound
Last edited by jdmdohcpower; Jan 16, 2015 at 07:43 PM.
Thread Starter
Burning Brakes
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Not sure, most cars you can remove the rear cats as they are past the sensors, some you can't. My friend was able to do it on his cts-v without programing I'm assuming the pipe manufactures will have the answer. I haven't jacked it up yet to see if secondary O2 sensors were before the rear cats
Melting Slicks
Joined: Aug 2000
Posts: 2,611
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From: Phoenix, AZ USA
There are cats in the x-pipe. When you remove the aft cats and replace with an "off-road" or catless x-pipe, sound will be significantly increased.
And I agree...I am looking at this option too and since I didn't notice any rear 02 sensors when I had my car up on the hoist there shouldn't be any issue removing them.
It seems like the Corsa double x may be the ticket due to no drone https://www.corvetteforum.com/forums...-vs-corsa.html
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Removing cats will probably trigger a CEL which can be cancelled out with a tune, but of course that will potentially void any warranty. Also, removing cats will make the exhaust smell really bad. It will make the exhaust louder, but usually not better, especially if the original exhaust was already tuned for sound.
Melting Slicks
Joined: Aug 2000
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From: Phoenix, AZ USA
Also I don't believe the c7 is interchangeable with the Z06. I was asking if anyone was aware of a z06 specific part
Removing cats will probably trigger a CEL which can be cancelled out with a tune
Also, removing cats will make the exhaust smell really bad.
Thread Starter
Burning Brakes
Joined: Sep 2014
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The rear cats are only used to burn what the main cats didn't get and since you will still have the main cats you won't notice the smell and it will in my thoughts make the car sound great. My buddy's cts sounds awesome and and the xpipe is all he has as far as exhaust. Also I've had a few cars that i did this too. Never regretted it. Also spoke to corsa and they said they are developing one so I'm not sure if that means the current one won't fit but on Monday I'll call and ask. I'm pretty sure the O2 is in front of the xpipe so it won't throw a code. Can anyone chime in about the xpipe from C7 swapping over? I would really doubt it's identical between both platforms
Last edited by jdmdohcpower; Jan 16, 2015 at 10:59 PM.
Melting Slicks
Joined: Aug 2000
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From: Phoenix, AZ USA
I'd be willing to believe that these parts of the exhaust system are identical between the LT1 & LT4!
Here's your answer from the "best expert":
Race Director
Joined: Jan 2014
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From: Fulshear, TX
Here is a write-up I did comparing stock vs. Borla vs. Corsa:
https://www.corvetteforum.com/forums...-vs-corsa.html
Burning Brakes
Joined: Aug 2013
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From: Papillion NE
Corsa Xpipe is around $550. From everyone I have talked to ... vendors and from other forum members - there have been no codes received. Im about ready to order but along with the Corsa Sport mufflers.
Im thinking its 14768 for the sport mufflers
And not sure .... if its the same X Pipe (no cats) it may be 14761
Im thinking its 14768 for the sport mufflers
And not sure .... if its the same X Pipe (no cats) it may be 14761
Last edited by Bmbarney; Feb 17, 2015 at 09:48 PM.
Thread Starter
Burning Brakes
Joined: Sep 2014
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No x pipe will throw a code because there are no sensors there. The x is past all the sensors so no worries. Corsa' is a 3 inch double x. My concern is that the gas coming in can expand and then will have to contract again at the 2.75 muffler inlets creating back pressure? I've also read that it gives a more exotic sound rather than muscle. If the stock size is 2.75 it may be best to go with borla's since it's also 2.75. With a 3 in aftermarket exhaust you would want corsa but I would rather keep the same size all the way and prefer the muscle sound
Is my thought process a good one or am I understanding this wrong?
Is my thought process a good one or am I understanding this wrong?
Melting Slicks
Joined: Aug 2000
Posts: 2,611
Likes: 826
From: Phoenix, AZ USA
No x pipe will throw a code because there are no sensors there. The x is past all the sensors so no worries. Corsa' is a 3 inch double x. My concern is that the gas coming in can expand and then will have to contract again at the 2.75 muffler inlets creating back pressure? I've also read that it gives a more exotic sound rather than muscle. If the stock size is 2.75 it may be best to go with borla's since it's also 2.75. With a 3 in aftermarket exhaust you would want corsa but I would rather keep the same size all the way and prefer the muscle sound
Is my thought process a good one or am I understanding this wrong?
Is my thought process a good one or am I understanding this wrong?
The Corsa X may need a reducer to fit, not sure but that shouldn't create an issue.
What you have to remember (and most people don't so don't feel bad) is that exhaust gas cools as it flows through your exhaust system....this also causes the exhaust gas to lose velocity. It is very common to have a size smaller tailpipe for this very reason. For example, on my 700+ RWHP NA LS7 I use 4" exhaust and 3-1/2" tailpipes with no loss of power over open headers!
As for the "muscle" sound...the double X will idle very nicely and under throttle, the X creates an intoxicating roar that is 2nd to none under WOT, just try a pre-2012 ZR1 or 2011 Z06!