Originally Posted by Rekrul
-Remove Cold Start
-Raise Top Speed Limiter
-Raise RPM limit
You should be golden if you do this. They'd have to dig real deep to find a tune if the above three haven't been modified. The above three are dead giveaways and are not reversible if you surpass max factory RPM and or Speed.
I'm in the same boat, seriously considering an ESS tune, but their tune is reversable, so it would put all of these back in pilace. If you reflash stock before taking it in, wouldn't bmw not know? Or is there some log that records when the engine goes above rev limit & speed limiter that isn't wiped with the flash? Would really like to know how this works if there's any bmw techs or car engineers who know how ECUs work.
I'm probably going for it anyway tbh, it seems like a great mod to really trim everything up for not much $$$