Join Date: Apr 2007
Location: Round Rock, Tx
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new intake and exhaust but fuel mileage is worse??
I installed a 4" turbo back Magnaflow exhaust and a Quadzilla intake
even using a CAT delete pipe and a 4" downtube, but I appear to be
getting worse gas mileage now as compared to when I was completely stock.
I am just using the onboard computer to give me the mileage, but shows I am getting around .3 to .5 mpg less than before. I am currently driving the same as before the upgrades, no hot dogging, etc. Thus I am presently at a loss for ideas? The SCT is coming next, thus I know it will help, but assumed I would see at least a little improvement with the current additions.
Thanks in Advance