Casper Electronics Throttle Enchancer

This is in the summit catolog and I was wondering if anybody has it or have heard of anything. The Casper Throttle Enchancer only cost like 90 bucks and says that it will increase throttle response. But does this mess with anything? If your timing is already at 14*? Thanks for your help!
 
Says it plugs into the TPS and eliminates throttle hesitation. I haven't experienced any hesitation when stomping the throttle down. Only slight lag, as it is a MAF system. I don't think it's worth $90, unless someone here has had first hand experience and thinks it really helps.
 
All it supposedly does is when you are at 60% throttle or above, it tells the ECU that you are at WOT(in the form of WOT voltage). To me, this is not worth the $$$ at all. A properly tuned car shouldn't hesitate at all. No extra power will come out of this either.