Our 16 program capable unit Has a board that we solder into your ECU. It has a cable that will go from your ECU to your clock. It has a special board we had designed to fit in the stock clock housing and you send us your clock and we install it. The old clock hour and minute set buttons allow you to change programs on the fly. You tell us your mods and the fuel you want to use and we do program the larger chip that is also included for as many programs as you want and we include a valet mode and no start mode. All the hardware, labor to solder, Time we have spent on the dyno to develop programs, money to develop a custom board to use the stock clock in a limited market. If we do not deserve to get $350 for all this we might as well close the doors. JWT charged $695 for many years for a single socket and chip with one program.