DiabloSport Predator 2 Programmer For 1999 2016 Ford Trucks & SUVs Gas Engines 2007 5 2010 6 6l lmm duramax The double adjustable feature these It helps eliminate the The double adjustable feature these arms allows length adjustments to the arms to be made with the arms still attached to the vehicle as well as allowing your vehicle to be upgraded to different lift amounts without having to replace the control arms in the future Rear lift block and U bolts level stance and secure axle position Eliminate downshifting when climbing hills Speedometer correction for changes in tire size and gear ratio* Increased memory with faster processor for improved tuning & updating speed