Rep Power: 0

i have a mazda 3 2007 and i want to achieve better gas mileage, will a performance chip do that.

 
Rep Power: 0

hello, yes a performance chip can improve gas mileage and boost your horse power. i belive you can tune them for better gas or more horsepower also more torque. i belive a good one is a bullydog performance chips. good luck!