Now that Im running catless with the ZZP sim it seems as though the car is running rich, is that normal? or is it just the extra fumes from not having the cat?
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smell will change with no cat. what year is your car?
Yes its fine just smells lol
What makes you think it's running rich? Did you scan it?
It'll smell without a cat. As long as it's not acting different or throwing a code you should be good.
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