Getting ready to tear all the bullshit off of my 6.7L Diesel and wondering if anyone knows if Dyno Brian is still around and doing tunes, and if so if he tunes Diesels? Ordering the new exhaust this week which will eliminate the DEF and would like to tune once complete. I can buy a tuner and the whole exhaust set up for about $2,500...they advertise a 250HP gain with this tuner but I have been told by a couple people that a custom tune would be better and cost far less. thoughts? anyone done theirs?