The specs on the stock computer are tuned fairly safely. this is to allow for almost NO POSSIBLE harm to be caused, regardless of how you drive your car (one extreme to the other)
However, the engine itself is capable of producing more power, etc, if the computer would allow it. This is where the chips come in. they remove the stock, limiting code of x% timing, or fuel, and replace it with a more aggressive, but still safe and proven, level. In comes the power, and fun.
As always.. this should be the LAST THING YOU DO TO YOUR CAR. PERIOD. unless you like spending money (you would have to reburn the chip every time you bought another performance mod for the car, like an intake or exhaust, etc...)
Ray
