Thread: gas milage after catback install?
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Old 03-01-2008, 07:14 PM
jphh20 jphh20 is offline
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Default Re: gas milage after catback install?
I installed the Billy Boat dual exhaust catback system and experienced a decrease as well. Since I live in CT I was trying to determine if it was the change in season up here being winter and all or the catback. I experienced 15-16 mpg B4 Catback and 14's mpg with Billy Boat. I'm running the 33's with automatic transmission.
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