Quote:
Originally Posted by ventjock
I've removed the CEL with the JB4 but they reappear. Shows the car is running lean. I'm going to have the car looked at for any potential leaks, but I haven't noticed many changes.
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Contact JB4. They can disable the CAT CEL, but if it says you're running lean, then I would agree that you should check for leaks and make sure you're running the correct Octane for the Tune.