Whether you car is old or new, you can so with some improvement in the horsepower it generates. The performance chip once installed in your car engine helps enhance the power and torque. The exact increase in power and torque would however depend on which model you own and also which performance chip you will go in for. The performance chips are made exclusively for your Mitsubishi Eclipse and there are a variety of chips to choose from. Installation is pretty easy and will not take more time than tightening a screw!