anyone got this? it has a 100% money back guarantee!! Should i give it a try?

http://rs4performance.com/index.html

 

They have a 30 day money back deal. That includes shipping. I'd say try it and see. If you do be sure to post and leet us know.

 

total waste of money....it's a.04 resistor from radio shack....

 

 

lol they sell them for lambo's, ferrari's, and bently's too

 

I wouldn't waste my money on that bull**** if it was possible to get 5 to 10 mpg more don't you think ford would have made their trucks to do so. If you want something for performance get an edge programer or something that someone knows works.

 

Dumb piece of wanna be tech...

 

If you read the description it does everything except cure cancer. Maybe next version will do that...

 

Lol wow love everyones reply!!!!!

 

I love how you can choose between performance and fuel economy: