Hey guys. Decided to do dpf delete over the weekend. Got all the delete pipes installed and used a dpf-r 4.0 (not the best choice, but I had a pretty strict budget) for the tuner. After installing the truck sounded and ran great, took it for a test drive and everything went well until I gave it some throttle. It pretty much went into limp mode, couldn't get above 25 to 30 mph and sounded like it was missing and was blowing white smoke everywhere. After I got it back home and I returned the truck to a stock tune and then put the dpf-r tune back in (this was the only way I could get it out of limp mode). I drove it after that taking it easy for about 400 miles over the weekend and everything was perfect, then yesterday I gave ot some fuel (a little over half throttle again) and same thing happened. I don't have egr block off plates installed and gearbox z is telling me that is the problem. Anyone have any ideas? The truck is a 2008 Ford F250 6.4 powerstroke. Any help is greatly appreciated!