Last weekend myself and Irb Digital went to the local dyno to put down some numbers. My E92 is bone stock and his car just has the Active Autowerke exhaust. I made 3 images. The first is the uncorrected plot and the second is the SAE corrected plot to show the differences the dyno can show based on how you have it configured. I also added an image of my stock car plotted against Irb's modified car. You can see that the 3 hp difference is pretty much maintained across the RPM range. I was really hoping he would hit at least 350 hp with the AA exhaust. I also added my and Irb's dyno videos our buddy shot.
