[PilotxERAU]

Originally Posted by nothingman

Sorry for your engine failure, OP. If I were in your shoes, I'd return the car completely to stock. All your mods can easily be reversed in a day.

Then I would get it towed to your local dealer. I wouldn't admit any mods or racing on the track. Just claim the failure during regular spirited back road driving. Some folks may disagree or claim dishonesty, but this is your best shot at avoiding a tremendously costly repair.

All that said, it doesn't matter whether your dealership likes you or even believes you for that matter. More than likely BMW corporate will send a regional tech to your dealer to review the car, and once they plugin to your DME they'll see the boost and other parameters you exceeded and deny your claim. This exact same thing happened to a guy on the M3 forum because of a slipped crank hub, but BMW corporate ended up splitting the repair with him 50%. Its better than nothing.

Of course, if none of that works you can always do an LS swap.