Hey all, I have a B20 block with wiseco 12:1 pistons, B16 head with skunk2 cams and internals, tuned on hondata with no cat. The normal idle for the car is 1100rpm. When i first stsrt the car up when it is cold it will rev up to about 1600rpm and then imediately drop to about 500-600rpm. The rpms go up and down by about 100rpm until the car hits 1100rpm which is when the idle smoothes out. The car is burning oil a little bit and cars normally stay back and dont get close when they are following me. Any clue whats going on? Any help would be appreciated.