Crank, How far back from the engine exhaust do you have the pressure tap in the tuned pipe. Can not quite tell from the picture. I'm trying to find out where the pressure tap should be on a tuned pipe. Seems like mine does not create enough pressure. The engine is leaning out at the top of loops, etc. I have mine 1 1/2 inches back.

Thanks,
Ralph White
Neoga, IL