The car idles at 1200 rpms. I checked for vacum leaks but i can't find any. I also get knock retard at 15lbs of boost. I have a progressive alcohol system and running a TT chip. I first noticed this after a pass down the 1/4 mile. Could the timing in the chip have been thrown off. I acts like the timing is to high. My speedometer isn't working so i can not adjust my timing in the chip. Eric can you help?