Originally Posted by rjd598
You my friend did not get a real tune then. Any member who has had their e9x m3 tuned can tell the difference. Obviously not great but yes there is a difference. At the end of the day all the tuners are doing the same thing and the results will be marginally close enough. Just go with ess and call it day. Thread closed
What makes more power on an otherwise stock M3...an ESS tune or a Procede + PWM meth?
And how much does an ESS tune cost, compared to the cost of a Procede V5 and their meth kit?