I have been reading on the internet about a module called the EDGE for Cummins engines and it sounds like it really boosts the horse power and torch at the wheel.
But I personally don't know of anybody that actually has installed one. Most that have engines still under warranty are afraid to add anything like that because if something does go wrong with the engine, then they will ref back to the modification as to probably causing a failure and will not pay.
I had two failures on 5.9 Cummins engines about ten years ago and they were brand new, so if I still warranty on an engine I sure would not add anything to give them leverage. But once the warranty is over I think I would go for it if I wanted more power.
2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox