Item:
Power Chip

Alias:
Xtreme Power, IAT Mod, Racing Chip, Racing-X, X-power, +20 hp!, Super Box, Varipower.

What it is:
10 cent resistor. Newer models now use a "variable" rheostat (looks like a nob) to trick individuals into thinking its a different product.

What its supposed to do:
Increase power by fooling the stock ecu/pcm into thinking the incoming air is colder then it actually is.

What it actually does:
Changes the reading of the IAT sensor (intake air temp) to show cooler air then is actually entering the engine. The engine adapts by adding additional fuel to compensate for the supposedly incoming denser and cooler air. This would normally add power, IF the car ran a relatively lean fuel mixture. Unfortuantly this is not the case with new cars. Due to EPA2 regulations, manufacturers now setup the A/F ratios to be extremely rich, especially in the upper rpms. Adding more fuel to these mixtures DECREASES POWER and DECREASES MILEAGE. The exact opposite effect of these ebay ads.

CAN GET THIS FROM RADIOSHACK FOR LESS THAN $1!