bugedd
Jedi Knight
Offline
I watched a few how-to videos on adjusting the mix on HS4's, but I have one question. How far do you raise the piston? In one video I saw he just rolls a flat head screwdriver over to raise it slightly to get the desired raise of 50rpm then settling back down. Is that all you raise the piston, about 1/4"? Obviously if its raised too much the car stumbles. And is there a small air filter that goes over the velocity stacks? I have large round K&N with backing plates but they are so big I can't get to the jet adjustments. Thanks for the help!