I just went non-sequential and like it alot so far. The only problem I'm having is rough idle and once the car is warm it tries to idle at like 400 rpm or less. If I pull any of the plugs off the manifold the idle picks up and runs a little smoother. I'm also showing 9lbs of vacuum at idle. Just installed a vac/boost gauge during the change so I have no idea how much vac. I had before with the sequential system. What is normal vacuum at idle? Anyone have any ideas?