MERCEDES MBE semi truck magnum smart tune x performance tuner chip

Want to see night and day difference in horsepower? Say adios to lean factory programming with this fuel tuner. Hook up this adjustable performance chip and improve the performance potential of your engine. This ECU chip is intended to remap the lean stock fuel maps restricted by the manufacturers. Your performance fuelpak will tune your engine with advanced fuel programming to harness the engine’s full power. It fools engine sensor signals being read by the ECU, resulting in an adjustment to the fuel curve which causes the increase in horsepower as well as improves acceleration and smoothes out throttle response across the entire RPM range.this unit is brand new and never been installed.bought it for a freightliner with a mercedes mbe but never got to install it...works on many applications check magnum tuning site for more info and aplication..will ship for free in usa,