Originally Posted by powerstroker67
Kinda a waste to leave the dpf/cat on, if your looking for power and mpg gains. Seems like the programmer/tuners that add power with the dpf still on the truck don't help mpg, sometimes mpg goes down. The dpf is the diesel particulate filter that cleans to exhaust, this is done by firing a BUNCH of extra fuel to get the exhaust/dpf very hot and burn off the soot. Some don't want to take a chance taking off the dpf(off road use only). DPF off Spartan or SCT. DPF on Superchips Flashpaq.
Very well said. We sell both brands and have seen great results from both. The Spartan is very easy, and is more capable, but you will be happy with both. The Spartans don't stay in stock very long, so if that is the route you choose, get on the list ASAP!