Originally Posted by Fabrik8

Rip off. It's not a chip at all, it's a resistor. Resistors like that are $0.20 or less.
So let me tell you how this works. You put a resistor in line with your intake air temp sensor. Now your ECU thinks that your intake air temp is lower than it actually is, so it makes the air/fuel ratio richer. So you're paying for something to make your car run richer across the board. Yay. I particularly like the "best results with premium gas" or whatever it says. Then you'll think that it's the resistor mod making more power, not the ECU advancing the ignition because the octane is higher.

Waste of money, don't be fooled by things like this that promise lots of free power. It doesn't happen. THe best thing that you can do if you want more power is to get your car tuned, then it will run correctly and efficiently (and gain power instead of just running richer).