CBH
Seasoned Member
- Joined
- Jan 7, 2023
- Messages
- 497
- Location
- Austin, TX
- V-Series Cadillac(s)?
- '23 CT5 Blackwing w/ Clutch
I have a thread here about my exhaust mods. I replaced factory mufflers with aftermarket pass-through mufflers. Re-used factory tips. Local shop custom made all the mods for under $750. It sounds much better, but still not enough for me.
Its noticeably louder than stock with the flaps open. But still quiet enough that you don't notice it while maintaining conversation with your passenger. The flaps still quiet it down if necessary, but I never find it to be so.
Unfortunately, the shop nor I knew about the procedure to re-link the ECU with the muffler flaps, so I did get a CEL even though I changed nothing related to cats or upstream from the mufflers.
I don't understand why y'all are even considering keeping stock mufflers with headers though. It defeats the whole point of headers to keep stock mufflers.
My warranty is up next Spring, so I plan to add the Kooks and get it tuned anyway. I figure the flaps will keep it contained enough if I ever need to. The tune is ridiculously expensive, but there are few conveniences I just want to have....and killing the CEL will be nice. Ironically, the CEL is hidden behind my steering wheel, so I forget about it.
Can't wait to fire it up after that
Its noticeably louder than stock with the flaps open. But still quiet enough that you don't notice it while maintaining conversation with your passenger. The flaps still quiet it down if necessary, but I never find it to be so.
Unfortunately, the shop nor I knew about the procedure to re-link the ECU with the muffler flaps, so I did get a CEL even though I changed nothing related to cats or upstream from the mufflers.
I don't understand why y'all are even considering keeping stock mufflers with headers though. It defeats the whole point of headers to keep stock mufflers.
My warranty is up next Spring, so I plan to add the Kooks and get it tuned anyway. I figure the flaps will keep it contained enough if I ever need to. The tune is ridiculously expensive, but there are few conveniences I just want to have....and killing the CEL will be nice. Ironically, the CEL is hidden behind my steering wheel, so I forget about it.
Can't wait to fire it up after that
