I have a B18B1 in my eg. The timing is advanced to 18. It has the basic bolt ons(i,e,h) my problem is my idle rises when i pump my brakes. I'm not sure if this is a bad booster or a vacuum leak. Also at about 3500-4100 RPM the motor feels as if it gets weak for a second or two(not throughout the entire 3500-4100 range, but somewhere in there). I have vacuum tested the cylindersand came out with 200,175,185,200. In that order. Any ideas, do you think it might just be the inconsistancy in the cylinder pressures ?