Well, I really don't recommend alot of products in this catagory, but I have just received and programmed my 2008 Ford V-10. The difference is unbelievable both in power and increase in gas mileage. "Mike" does more than just Fords and more than just gas rigs. Check out his web site, you won't be disappointed.
5 Star Tuning | Custom Dynomemeter Chassis Tuning Products and Services
2008 F-250 4X4 Lariat V-10
2002 Airstream Classic 30' w/SO #2074
2007 Kubota 900 RTV
1996 Ford Bronco
2007 Lincoln LT