I have a 84 which I dearly love, Last weekend I installed a super chip. It ran fine on my way home, and then I parked it until last night. I went out to start it and it was running really rough. It was backfiring through the injectors. Do I need to adjust the timing or is it something unrelated or am I just fubared. Thanx for any advice someone can give me.
Jeremy

 

Put the old chip back in & see if that clears the problem, then go from there!