Well i got my heads replaced and that's another story, I'm not a violent man but I wanted to knock this techs teeth in.
Anyway after a good few hundred mile test drive I installed my tune and CB Engineering Offroad Pipe and so far I'm very pleased with the results. I've only driven it a couple hundred miles so far but I've definitely seen a sharp increase in fuel economy and performance. I should have started with a full tank but didn't so the real numbers will have to wait. The performance is also much improved in my opinion. My wife even noticed and she doesn't normally pick up on things like that. Definitely reduced turbo lag and more power, drive ability is much better. It did wipe out the warranty update on the shifter but as I've had no issues I'll just be sure to double check when putting the jeep in Park. The other comment my wife had was that the exhaust is "stinkier" which is of course to be expected. This was after she remote started it in the garage, I've since warned her against this especially while the garage door is closed. I left the stock mufflers in place, at least for now, and the noise level isn't much louder but the tone has changed some for the better IMO. I think I'll go with straight pipes eventually but we will see. It may be a figment of my imagination but i believe I can hear the turbo a bit more and the engine noise seems slightly increased. Perhaps it's from being 21 days without my jeep and driving a gasser Ram. Anyway if you have any questions I'll gladly answer them to the best of my ability. Oh I will say, the stock exhaust was a mother to get off but the CB pipe went on very easily in comparison. They make a very nice product, a bit expensive but it's all 304 stainless and you get a flex coupling, nice v-band clamps and a machined plug for the DEF injector to keep it clean. Their instructions led me a bit astray with one of the sensor sizes, they said 27mm but it must be 28mm or maybe 29mm. I used a pipe wrench because no one was open at 4am.