Thanks...It needs to be tuned a bit more using my AFR. I can't say for sure why it's dipping so much. But I'd rather it dip on the rich side than the evil one:) The chip is a custom built one from a local race shop in Toronto. I'll shape it up in a couple of weeks when I go back. Thanks again.
:benefit from some tuning ...do you know why the dip in the a/f curve around 4-5k at all ? What chip are you running ?
