Originally Posted by MSport35TT
While on the topic can anyone shed light on to this?
My inspection is good until 2015 so passing inspection is not my consern. My concern is with bringing it in to BMW while the car is still under Manufacture Warranty till 9/2013 and CPO till 9/2015. I have Cobb stage 2 to bypass the CEL for now but when I un-flash it to bring it in for service will the DP Fix help with hiding the CEL w/ out the help of COBB stage 2? Also how does is this compatible with a COBB installed on top? Thanks
You probably won't get busted by the techs/dealer because of the catless codes, all it will take is a simple look at the undercarriage and it will be plain as day obvious that you have no primary cats. Though they'll also read the dme for faults so you're a bit screwed either way. If a dealer cares about catless downpipes (and most do), dpfix is not going to save you.