Company Representative of RPI Power
I haven't done one of these tests in a while but a customer called and wanted to do dyno runs before and after his ram air kit install. The car was a 2008 M5 6spd. I did runs at 20 seconds apart with the hood closed. Ram air kit was installed while the car was on the dyno and no fans were used to cool the car while the intake was installed. All runs were with the hood closed and ATS were not moved.