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When I added my cai and custom exhaust it helped my gasmileage some . Actually with the cai if you have a k&n filter thats what helps with gasmileage nicely. Borla is a nice exhaust but so is magnaflow which is cheaper in price and both stainless steel exhausts.
he is saying that the way a person drives when having the CAI installedmakes the mileage decrease. adding a CAI does improve your gas mileage, not an extreme difference, but it does help it a bit. maybe everyone that says it doesn't are those type of people that YAKO was talkin about lol.
HA! thanx for the posts guys...... neways i need to get an exhaust.... bnut im not sure which one.... i went to auto aything and found a brand called pace setter.... some horse neways is it any good?