As an example... how these sort of add-ons/upgrades dont always improve mpg.
<LI> Added Exhaust and intake mpg went down by 1mpg (Edelbrock Headers, Corsa Exhaust, Airaid cold intake)
<LI> Next added Hypertech program with 87 octane program. Mileage dropped .5 mpg
<LI>Added throttle body spacer.. another .5 mpg drop.
<LI>Removed Hypertech program, throttle body spacer.. Installed Magnacharger... Mileage dropped another 1 mpg.
Long story, but mileage is now at 10-11mpg depending on how deep my foot is in it.. I think the added HP and exhaust tone etc makes it more fun to rip out of stop lights and smoke those imports
.... Could be the cause of the lower MPG...
