Originally Posted by English

Hello team


Fitted my MSD chip today and using a gas analyser, attempted to set the idle CO to the suggested 2.7%-3% CO

I did a lot of turning of the pot on the ECU attempting to get the CO down, as it was sitting at around 7%, but I couldn't get it any lower than about 7%

Someone please tell me how I can get my CO down. My car now seems to be hunting on idle quite a lot since I changed the chip, and I'm worried about borewash too

I especially need to know how to get the CO screw to a position where it starts having an effect on the CO, as I couldn't seem to get any change


Thanks!