Has anyone ever used/installed a performance chip on your car/truck for improved horsepower and gas mileage?
I have a 2008 Dodge Ram 1500 with the 5.7 Hemi and I was curious if these things will really increase horse power and improve gas mileage. There are a TON of them listed on e-bay, but they all seem a little too good to be true. Are they a scam or do they really work?
|