90 GTUs. All hoses, lines, and intake gaskets are new. Everything on the motor is still at stock configuration. The six ports and actuators work fine with no binding but do not open at rpm. I also noticed the upper 2 butterfly valves do not open when the engine is up to temp and revved up.

I fixed open the six ports and enjoy the smoother power application. (the six ports were cleaned in January and pineapple inserts were installed).

The car starts and runs fine. Does not feel as peppy as I expected. ( I have a 79 w/modified 12a). Feels better with the 6 ports open. Motor compression checks at 6.6 @ 230 rpm using a Mazda tester.

Ideas?