OK lets here everyone's input on this little guy... I emailed the guy and he guarantees a horsepower improvement...or your money back. Even shows a dyno run...

http://cgi.ebay.com/ebaymotors/Chrys...QQcmdZViewItem

 

resistor in a box ... goes inline to IAT sensor and tricks it to report lower values to increase timing for a horsepower gain ... it work but is not the optimal way of doing things. but it does work so long as they did their homework ... otherwise it may be dangerous if they went too far with it.