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Cat back exhaust install

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Old Nov 22, 2024 | 05:04 PM
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Default Cat back exhaust install

To install a cat back exhaust is it necessary to remove the rear bumper (facia) ?Can this be accomplished without a lift ? I have an urge for more noise. I have had the fuse removed from the exhaust control since mile 350 and even that is too mild. My long gone C4 had a Borla whose sound I would like to duplicate. This possible project would be on a 2019 Stingray conv. Bob C
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Old Nov 22, 2024 | 06:29 PM
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So to do cat-back, you’ll have to replace your xpipe and axle back exhaust systems which are sold separately. If you plan on getting long tube headers, you must buy those together as an xpipe that fits the factory primary cats won’t work with any long tube headers. If you currently have AFM valves in the exhaust, you’ll probably be sold a valve back exhaust which does not replace the pipes from the xpipe connection to the valves. You can buy simulators that attach to the AFM motors and then can buy an axle back system and not get a CEL. To replace the axle back system, you have to remove the lower fascia of the bumper. It’s pretty simple. Hardest part for me was removing the reflectors. I was told to push them out from the inside but couldn’t even see them from inside the fascia. I pulled them out and broke the middle clip on both. It appears to be holding strong.

Regarding the xpipe, if you don’t buy one that deletes the secondary cats, don’t bother. Speed Engineering and Extreme Online Store still make these. The big exhaust guys stopped due to EPA. These cats are not monitored so you won’t get a CEL.
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Old Nov 22, 2024 | 08:36 PM
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Forgot to include, people on here have done it on stands. I did mine on Quickjacks with plenty of room.
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Old Nov 25, 2024 | 09:47 AM
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As has been mentioned before removing the cats is a Federal crime. Not only you could get nailed but the installer who did it woud lose big time.
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Old Nov 25, 2024 | 10:54 AM
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Originally Posted by claf
To install a cat back exhaust is it necessary to remove the rear bumper (facia) ?Can this be accomplished without a lift ? I have an urge for more noise. I have had the fuse removed from the exhaust control since mile 350 and even that is too mild. My long gone C4 had a Borla whose sound I would like to duplicate. This possible project would be on a 2019 Stingray conv. Bob C
Yes you need to remove the bottom rear fascia - not terribly difficult job if you take your time. Definitely easier on a lift too


We have a bunch of exhaust systems in stock and on sale for Black Friday.

Feel free to reach out with any questions and/or for pricing.

- Alec

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