Have a 2011 335 FBO on stage 2+ MHD, been having a CEL that comes and goes for almost 2 years, took it to the shop many many times and everything was checked and repaired (valve cover, inlets, outlets, intake, MAF, smoke down test, break booster) and the CEL will be gone for a month or so but now it’s back and stronger then ever, no other codes, no loss of power no rough idle. Could this be something related to the tune? Or a DME or software issue? I need to pass inspection and because of this im stuck! I really need help to pass inspection Cause Apprently there is no boost leak or unmeasured air. I know i can’t be the only one to deal with this, any help is appreciated thank you
