I assume that a partly clogged cat could affect mileage, but an exhaust leak also could be it. How would I go about checking that? Where are the trouble spots to look at first?
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08-12-2015
I assume that a partly clogged cat could affect mileage, but an exhaust leak also could be it. How would I go about checking that? Where are the trouble spots to look at first?
08-12-2015
zzp even warns that the high flow cat can throw a code. but that wouldn't make you lose fuel mileage. clear the codes again and unplug the battery like scotty says.
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