Originally Posted by BuraQ
It happened to me...you wont really know unless WOT the car. I started to suspect mine when a PROcede 335i pull too hard and too fast from me vs the many many times we had done the samething
Took it for a dyneo run and I about almost got into it with the shop guy, I took it back to the Dinan BMW dealer to have Dinan S3 reflashed back to it
I apologised later...
Hmm, well guess everyone's butt dyno is different. I could tell at partial throttle acceleration that it felt "slower". But then again, I also knew it had the stock flash put back on so I expected it to feel slower.
Did you have Dinan s2 before your s3 flash? Was the power increase noticeable?