CNet News has info on ways to alter your car’s performance by hacking your engine’s computer.

An increasing number of car owners are using computer chips or software downloads to get better performance from their cars.

The possible benefit of hacking your car engine is increased power. In some cases, it can result in better gas mileage, but most hacks that increase the power will decrease the miles per gallon.

But be aware that there are some small potential disadvantages that can go along with this increased power:

• Dirty exhaust
• Failed state emission inspection
• Voided warranty
• Burned out engine

The article gives an example of a man who gained 18 horsepower in his Volkswagon Jetta at the cost of 10 miles per gallon and a clouds of black smoke following him everywhere he went. Another man got 40 more horsepower from his Porsche 944 Turbo at the cost of a $7,000 engine repair bill.

Hey, if you want an omelet, you’ve got to break a few eggs.