Originally Posted by rab4225
I had gone through the GDE site and read it before, for some reason it didn't connect when the question popped in my head.
Looks like they use both methods and the regen start is 80%.
I have never bought a tune for a car but this looks really nice. It gets really annoying that the constant regens end up costing 2-4 mpg depending on when it decides to run.
No problem, and I agree with you. I like the GDE tune, looks like they've done everything the "right" way to both improve engine longevity while getting the most out of it (power and MPG!) at the same time.
With the stock tune I too can tell when a regen is occurring based on MPGs. Suddenly getting good mileage becomes much more difficult while it does the DPF clean up. I'm guessing a decent portion of the GDE improvement is coming from simply not needing to regen as often. Though I'm certain there's more to it as well.
Poke around on the RAM1500Diesel forums as well, there are a lot more RAM Ecodiesels with the GDE tune probably because there are a lot more of them on the road. Plenty of good reviews and information "over there". I haven't heard anything bad about the GDE tune yet...well, except for the whole warranty issue. Nothing they can do about that.