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5 Engine Modifications to Improve Performance


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Performance Chips
Onboard computers in modern cars control, among other things, fuel-to-air ratio.
Onboard computers in modern cars control, among other things, fuel-to-air ratio.
Peter Dazeley/Riser/Getty Images

If you drive a late-model car, it's highly likely that there's an onboard computer regulating things and running the show, controlling such functions as timing, anti-lock brakes and the all-important fuel-to-air ratio. Performance chips (or superchips) are "hacks" that can be installed to override factory settings, and they're most attractive to gearheads since they can increase the power of the engine and horsepower. A performance chip sets new parameters for the functions of your choosing, such as telling your car's engine to use gas slightly more efficiently, or to intake more air for a bigger combustion. Installation is easy and DIY -- once you acquaint yourself with your car's electronics, simply take out the factory chip and plug in the new one, just like plugging in a chip in a desktop computer.


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