Exclusive programming produced in house by Kennedy Diesel alters Fueling, Timing, Boost, Auto transmission shift firmness, and increased glow plug time for better starts. No need for additional boost controllers. This is an exchange program, please select one of the core options listed below or we will need for you to send your unit in advance.

Available for 1996-up Trucks, Suburbans, Blazer/Tahoe, and Humvees in Performance Tow, and Max Effort calibrations.

"Must specify vehicle, transmission type, VIN, and as much detail as possible so that I may produce the performance level desired. Forget HP claims and hype. The 6.5 does not gain 80HP from a chip. All BS aside, my customers and myself have tested mine against the others and came out on top"- JK

If you do plan to return your ECM core but need us to supply you with a loaner, please select this item.

All cores MUST be in proper working order and must be returned within 15 days (unless other arrangements are made) or it will be billed as non refundable.

"Select this item if you plan to keep your original ECM and wish to purchase mine." -JK