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TraumaRN1LE · 02-17-2019, 03:04 AM

Hey guys,

Forgive me if this has already been covered. I recently purchased my 2015 SS 1LE and while I love it, the stock exhaust is just too quiet for me. I was wondering if anyone has had any experience switching to the NPP dual mode exhaust from a stock exhaust. I know Ill need to switch out the rear diffuser, but is there any electrical work that will need to be done for the valves on the NPP system? Thanks in advance.

Also fyi I'm stuck in communist California, so after market exhausts are a tad too risky at the moment (unless anyone has experience with a corsa sport or something similar, no headers or anything like that) Thanks!

02-17-2019, 03:04 AM	#1
TraumaRN1LE Drives: 2015 Summit White 2SS 1LE Join Date: Dec 2018 Location: Southern California Posts: 10	Stock exhaust to NPP Hey guys, Forgive me if this has already been covered. I recently purchased my 2015 SS 1LE and while I love it, the stock exhaust is just too quiet for me. I was wondering if anyone has had any experience switching to the NPP dual mode exhaust from a stock exhaust. I know Ill need to switch out the rear diffuser, but is there any electrical work that will need to be done for the valves on the NPP system? Thanks in advance. Also fyi I'm stuck in communist California, so after market exhausts are a tad too risky at the moment (unless anyone has experience with a corsa sport or something similar, no headers or anything like that) Thanks!