gas mileage ?

ECU5.0

Banned
Jan 10, 2004
1,803
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raleigh, nc
alright, after i put on my cobra intake and 1.7 rockers and afpr my gas mileage went down the drain. i was getting about 225 miles per tank and ive only got 175 and i need gas. im running roughly 32 psi vacuum on and 38 vacuum off, what is the problem?
 
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