NEED help
12-04-2010, 10:50 AM
#1
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Join Date: Oct 2010
Location: wa
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Year: 1993
Model: Grand Cherokee
Engine: 4.0
NEED help
so i have a 93 zj 4.0 inline6 i put a 3inch lift did a cold air intake and a exhust system everything was fine thin all of a sudden my mpg droped buy like 6 mpg o2 sensore looks fine all the plugs wires cap rotor are all good the check engin light is not on so i dunno why it would just all of a sudden have such a dramatic drop
12-04-2010, 10:57 AM
#3
CF Veteran
I do know from my own experience when I simply put a glass pack on my exuast I noticed a mpg drop to.
More volume of air flow will suck more fuel.
More volume of air flow will suck more fuel.