Thanks for the info 45ACP.
I've been using a Scangauge to monitor some selected temps on my 6.4 but of course it doesn't tell you anything about the regen's. I may have to invest in an Edge.
On your 6.4, can you remember how many miles it went between regen's? How many miles did it have on it when you got rid of it?
Since it was a shortbed, the smaller fuel tank gave me about 320-360 miles between tanks for daily driving. I would average 1.5 regens per tank. Towing dropped that average to just below 1.
I never did track exactly how many miles between regens, so that's all I have.
My 6.4 had 34k on the odometer when I traded it in for my current 6.7
I have been through this issue fairly recently....except the failure I experienced put me on the side of the road.
I would recommend replacing ALL the spring packs and adding a wet bolt kit if not already installed. Peace of mind is priceless and if you are looking at upgrading to heavier packs, it would seem that's what you are after.....
Having owned both a 6.4 and now a 6.7, I can say with certainty that neither gave any constant indication of a regen taking place.
That was part of the reason I chose to install an Edge Insight CTS monitor. There is a small red "R" that appears at the top of the screen when a regen is taking place. The "R" appears about 10-15 seconds before the DIC shows "Cleaning Exhaust System" and it disappears as soon as the regen is over (or the truck is shifted into Neutral or Park).
As far as miles between regens, I can also say that my 6.7 performs regens about 40-50% less often than the 6.4. I had the same CTS installed in the 6.4 as I do now in the 6.7. I use both trucks as a daily driver and to tow the same trailer, so the comparison is valid in my view. The regen cycles are about the same length in time.
I get better fuel mileage out of my 6.7, even though I now own a dually (compared to the 2010 250 shortbed of my 6.4). Injecting raw fuel into the exhaust stream 40-50% less often must have something to do with this...