Wasn't sure where this should go so I just put it in here. So I'm driving and my buddy was like get it up to like 5k rpm and I'm gonna turn the car off and when I do hold the gas pedal down. So I did, It sounds like a jake brake if you do that. I guess it is jsut that you can hear the valves opening and stuff with the throttle open. Is that good for the car? Just thought it was kinds cool.