theres alot of tuning involved in removing the regen part of the programming, then alot of tuning to get the horsepower gains
your also buying flash device and digital guages, and a delete pipe so you can take out the dpf.
with sct, i think you also have to get a kit for the pyrometer, spartan can read this thru the trucks computer
and yes it is alot of money, but if i had to tune my truck, i would pay double for what i paid for the spartan dash daq, better mileage and power, great products and service
and to add to an earlier post im had made, i would not get the 250, get the 275, i have not tried it but i heard it is night and day difference between the 250 and 275