Powerchip S65 E92/E90 M3 ECU Tune IssuesA bit of a debate has been raging on the forum which led to our user DonDon requesting his Powerchip dyno graphs be posted. These graphs were sent to us a while ago but we did not post them as we wanted to see how the situation was resolved before judging anyone. However, the owner of this car, DonDon, requested they now be put up due to his displeasure with Powerchip. As you can see in the graphs, the car loses power from idle to 7000 rpm. It only gains power beyond 7k and it does so due to being heavily leaned out. This tune would give the impression of greater top end gains even though the stock file is actually a better tune. Take a look at the graphs and come to your own conclusion as they are compared with stock. We also are not sure if the situation has been properly resolved yet..