Originally Posted by Valentino_RS
If you get a full exhaust system, your CEL will turn on and you car will run like shit unless you get a tune or get the Akrapovic "Delete-R". .
Your car will run just fine with the CEL on, it definitely won't run like shit. And the delete-r just sends a clear code to the ecu every ten minutes, so if it actually did run like shit, the delete-r wouldn't help you.