Quote:
Originally Posted by FiveOh
An exhaust leak at the head flange can suck back in air and cause a false lean condition, the ECU responds by adding more fuel and it could run too rich to idle. A leak after the cats wont do anything like that.
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I will definitely agree here. As I was reading your PM as well it sounds like the flange of the headers is not completely mated to the and causing the crappy idle. Did you use the bent wrench to get to the bolts around the smog bar? And did you tighten from the inside cylinder bolts outward? There are a few tips that I also wanted to go over with you. I tried your number and no answer and the other was a wrong number. Give me a call when you can and well get you sorted!!