Quote:
Originally Posted by MartyMcFly88MPH
I was just looking around at what's out there and noticed the Dinan tunes don't recommend a downpipe, no matter which tune you choose. They recommend their exhaust, but isn't that just a cat back? Am I missing something here? Wouldn't a downpipe be require like OP says?
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I guess your first mistake was taking advice from dinan lol
In all seriousness though, it is probably because of being in CA and emission laws that they cannot endorse anything related to replacing the cat.