Any ideas why the exhaust work caused the
mileage to go down?
__________________________
I am no expert in the field but I do know that most engines are designed to
have and require some back pressure from the exhaust system. With the
high-flow cat and 2-3/4 inch pipes you may have killed most if not all that
back pressure. I don't know what you want to do now but if your wallet will
let you I would look into smaller pipeing, like maybe 2-1\4 or 2.5 inch
pipes. That may be all the more restriction you need to get some of that
mileage back.
Just a thought.
Mike B.
(waiting 'till this fall to get a decked '99 SLT 4x4 5.2L 5-spd)
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