ukravit
CEG'er
Got the chance to test things. used a different style vacuum check valve with a 7/64 hole drilled through it. secondaries fully open at 4000 RPMs. Haven't done any 0 to 60 pulls , but the kick has returned from the secondaries opening later. Have to adjust my driving style a bit to take advantage of the way it drives now. I still believe that the secondaries opening slower and at a slightly higher RPM will improve driveability. got this week to find out.
This check valve is also found on Escorts with the 1.9 SEFI
This check valve is also found on Escorts with the 1.9 SEFI