I DONT KNOW ABOUT FUEL MILEAGE , BUT THE RESPONSE
IS A LOT FASTER BECAUSE A FUELING BOX ADDS TO WHAT
THE ECM IS DOING TO THE FUEL PUMP, SO UNTIL THE ECM
STARTS FUELING A BOX IS NOT WORKING!
I USE A BLUE CHIP BOOST FOOLER EXTENDED TO THE TURBO
COMPRESSOR SIDE.
THIS GIVES BOOST FAST, BUT NEVER OVER BOOSTS THE ECM!
IT DOESNT AFFECT THE END RESULT OF POWER OR TORQUE
IT JUST GETS YOU UP AND MOVING FASTER!
404-363-3322