Originally Posted by ///Matthew
Wouldn't the read/write counts be off though? Meaning, wouldn't BMW see that more writes were done to the software than what they had documented during services showing evidence of a tune?
I would really like to run a tune on the car, the only thing holding me back is the possible warranty issue.
If the tune is not present they cannot attack you. I worked at the dealer for a few years and witnessed all of the attacks BMW made on the 335's when the JB3 first came out. If it wasn't there they couldn't do anything even if was shown.