Originally posted by art:

next thing what results might there be if the ports in the UIM are opened out a bit to match the UIM port size a bit more



Did you mean the UIM opened up to match the LIM ?? If so, we call that "port matching" around here. The results - a smoother transition from UIM to LIM theoreticly reducing the possibilities of eddies and air swirling where it shouldnt be swirling. (that's good)

Derek Scion xB 5-spd Previous: 2000 Silver Frost SVT Please share the road with cyclists.