Installed the H&S "no power" tune on my truck and 5" FLOPRO a couple of weeks ago and here are my thoughts...
> The truck runs great. I took a 400+ mile trip to the beach this weekend and averaged 16.9mpg (On the lie-o-meter). Keep in mind that I am running 37" tires and DID NOT reset the speedo so that throws things off. My driving consisted of highway, backroads, and beach stop and go traffic.
> I was able to recalibrate my tire pressures and I love that. No more tire light!
> The exhaust is loud. A little too loud for me and I like loud. It just sounds a little bit too much like a V8 instead of a diesel. There is no drone and at highway speeds -- the truck is REALLY quiet.
> Very smokey. If I lay on the gas hard at a red light I'm going to bury the person behind me. I mean they are left in a big thick black cloud.
> The turbo sound is amazing. You can barely hear it with the windows up, but when they are down it sounds incredible.
> The DPF weighs a TON! I thought the one on my 6.4 was heavy. The one for the 6.7 is WAY heavier!
> My truck was regenning 3 - 5 times a week before the deletion. No more urea for me!
> Call me crazy, but I love the diesel fuel smell when I'm outside the truck!