Catback Exhaust or mid-pipe/header for first mod?
Just order a 2012 C63 sedan 2 weeks ago.
Looking forward to drive this beautiful piece of engineering!!!

For the first mod, what U guys suggest? Catback Exhaust or mid-pipe/header ?
Thanks!
it would be alot safer to get the ecu tune and the exhaust at the same time. you dont want to take the chance of your engine running lean on account of a freer flowing exhaust. you can get an ecu tune now days for 1000 bucks.
if you get headers, cat back etc. with no tune, you run the risk of scorching the pistons......frowned upon in my experience.
really? just for a header or a exhaust? since I have order the performance package with some sls internal, I doubt that i need a Ecu retune!
for exemple, on my Subaru STI, at first, I put only the catback and the downpipe and never have an issue with it. Samething with my lotus Elise, only a catback d ont really need a ecu update. Just my 2 cent.
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really? just for a header or a exhaust? since I have order the performance package with some sls internal, I doubt that i need a Ecu retune!
for exemple, on my Subaru STI, at first, I put only the catback and the downpipe and never have an issue with it. Samething with my lotus Elise, only a catback d ont really need a ecu update. Just my 2 cent.
You are wrong, you need to tune with headers on these cars. It just flows so much more that you will run into problems.
If you have P31, enjoy the car till your warranty is up then do headers and mids... Be prepared though, because they are obnoxiously LOUD without cats.
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