Old spark plugs can reduce fuel economy by 30%; a faulty oxygen sensor by 40%.

Save money and time by keeping your car in peak running condition. CarChip can help by detecting malfunctions early and taking the guesswork out of diagnosing problems.

CarChip records data from the car's computer control sensors every few seconds, on each and every trip. With CarChip E/X, you can log any 4 out of 23 possible engine parameters, all of which can affect operation, emissions, and fuel economy.

If your car's check engine light comes on, use the software to view the trouble code, its description, and the freeze-frame sensor readings. You'll have the information you need to diagnose and fix the problem. And, CarChip will even let you turn the check engine light off when you're done!

Using CarChip, Henry discovered that his coolant temperature was running low. After replacing the engine's thermostat, Henry found that his average fuel economy went up -- saving hundreds of dollars per year!