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Edwin320 · 10-19-2012, 01:44 PM

I think they are also dependent on engine load. Revving in a parking lot doesn't put a load on the motor. Attach a GoPro pointing at the valve and go for a ride. You'll see the butterfly move.

10-19-2012, 01:44 PM	#8
Edwin320 Drives: 2018 Camaro ZL1 Convertible A10 Join Date: Mar 2012 Location: Miami, Fl Posts: 427 View My Garage	I think they are also dependent on engine load. Revving in a parking lot doesn't put a load on the motor. Attach a GoPro pointing at the valve and go for a ride. You'll see the butterfly move. __________________ Ed 2018 ZL1 A10 'Vert