i have had really good luck with the mp-8 and the edge, and i just have a cai for now, but dpf and egr delete package is stitting at home. waiting for me to get home. with the mp-8 iam getting around 16mpg at 75% turning of the knob
Dr. Performance has a module out for the 6.7L. We have had really good luck with them as well. We have a truck here and with a dpf delete and our module ONLY, when that thing shifts to 2nd gear, the tires dont "chirp" they SQEAL!
Well buying direct is sold full tilt. You will save money by going through our dealers. Dominator (the post above) is an authorized dealer and good guy to work with.