Chris, I don't know alot about the inner workings of the system except that the injection pump was changed as well as the injectors. The pump supposedly puts out a higher pressure to atomize the fuel better. Their traveling installer came to my shop to do the installation witch took about 4 hours. The power increase was good with no loss of fuel mileage, it probably would be better if I kept foot out of it. I think the install was a bit expensive at 3 grand but it has a 100k warrenty. The 0 to 60 time went from 15 sec to 9 and a little less than 8 after a trans upgrade. Thanks Sam