I drive a 2003 chevy trailblazer ltz with gas going up so much is a chip going to help me get better gas mpg?

im mainly concerned abouyt it ruining my engine
I drive a 2003 chevy trailblazer ltz with gas going up so much is a chip going to help me get better gas mpg?
Consider that automotive manufacturers have already experimented with just about anything that will give a vehicle the best mileage it can. If there was some miracle chip or device, they'd already have it in the vehicle and tout it to make more sales.





Your best bets are proper maintenance and paying attention to your driving style. They cost less in the long run and don't void your vehicle warranty. ;-)