Quote:
Originally Posted by mespiritu
Hey Mike, Just recently picked up a 08 E90 M3. just installed an MPE as well and about to add rkp street x pipe with RE test pipes. I know that it will throw a CEL once I install the test pipe. So my question would be which tune or stage should I say since I am already certain that I want to go with BPM. Any help would be appreciated! thanks
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Stage II for cars that have any changes to the front section of the exhaust
thank you!