If i put in an exhaust cutout for the occasional trip to the track, will i have to worry about having enough backpressure for the exhaust valves to function correctly? the engine has only around 20k (acdelco reman). i have been told (not sure if its accurate) that the factory springs require a certain level of back pressure to return to the closed position.

thanks,

Jason

 

negative.
the springs are all mechanical.
run the cutout, or open headers if you want.

 

cool. that makes life much easier for me.