Quote:
Originally Posted by 911monty
Ok I saw the other posts while I was typing. Last thought would be to not shift until at least 4.5k and get your car off that knock sensor. At those RPMs and low quality fuel your timing could be retarded.
Cats are catalytic converters.
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Sorry I messed up on the quote thing and had to fix it. Wouldn't 4.5k burn more fuel not helping with mpg?