Welcome to SpeedTuning^® USA!
Not enough power? Problems with acceleration, towing, bad fuel mileage? ...

• The Power Chip - an easy and inexpensive way to upgrade your engines performance and efficiency, for gas and diesel engines! ...
   
• Now available the new Power Plus Chip for bigger injectors!
   
• The Power Box - the ultimate diesel tuning kit from Germany: more torque - more HP, increased acceleration with an improved fuel mileage! ...
   
• Now also available Power Boxes and Power Chips for US cars and trucks!  Ask for the new Duramax Power Chip for all Chevy Duramax 6.6l Diesel engines, plus 100HP and 200lbft torque at the wheel!