So I have a 2007 Wrx. I have a Cobb accessport with the 91 Octane map that came with it. Also a Magnaflow axle back muffler, don't think the muffler changes anything.
Anyways I recently found a really good deal for a Catless Invidia downpipe brand new. I really want it because it's about half price as it normally would be.
So my question is can I do it without over boost issues. The guy at the store that's selling it said that it was fine because I have the Cobb AP with the Cobb Maps on it.
I always thought you needed a Protune to get away with a catless downpipe. Also the Emissions don't matter to me because I live in an area where they do not do emission testing.
Let me know what you guys think.