[billdzw]

Have followed a number of threads on this forum over the months regarding frequent exhaust particulate filter regenerations. Had my first regeneration this morning. Started up the truck to go to the gym and EVIC notification said something like "Exhaust Filter 80% Full, Regeneration Underway." (Not the exact words, but close.) So, took a 20-mile detour on the highway while the regeneration completed before going to the gym. I have 29,560 miles on the truck (it's one year anniversary is next Tuesday, June 30) and this is its first regeneration. Guessing this is primarily because most of my miles are long distance trips at speeds of 55-80 mph.

 

[firemist32]

There are folks on here that say the regens happen more frequently but are not displayed on the EVIC. My personal feelings are when its on the EVIC is the only time it does matter because of what the computer thinks but others might disagree with me. I am at almost 20K and have not had an EVIC announced regen yet

 

[Tim]

I'd bet you've had quite a number of regens. Just have to watch the instant mileage, it drops notably. Happens every few hundred miles.

 

[Katoom250SX]

Tim, you are correct. I've had them as often as every 150 miles. The "unannounced regens happen all the time. The only way you know is by watching your instant mpg or by having a gauge like I do to monitor other parameters. Mine is set for boost, exhaust temp, tranny temp and a couple others on the main screen. That's good tho that nearly 30000 miles have passed for the first announced regen....highway driving helps with that for sure!

 

[schmeg]

You will get a "level 2" regen when the DPF reaches 65-68 percent soot. You will get no indication on the EVIC or DID of this happening. Fuel flow difference is minimal, so seeing it on the instant fuel economy indicator is really hard. When you inadvertently abort a level 2 enough times and allow the soot level to climb to 80 percent, the truck will go into a level 3 regen which is what you experienced. Most level 2's occur every 85-150 miles in city and mixed driving and 225-300 miles on the highway. There is some argument as to how benificial it is to be able to monitor these regens and allow them to start and complete before shutting down. The exhaust will reach close to 1300 degrees during a regen. That is hard on any kind of metal and a slow cooldown doesn't hurt, not to mention if you didn't realize you were in a region and parked the truck over dry combustable material like tall grass, you may get a fire started under the truck. Don't laugh, it has happened. Monitoring will also keep you from going past a level 3 and into limp mode which isn't a good thing. I use a Scangauge II from Linear Logic cost was 160. I got it direct from them and it was pre-programmed for the ED. 10 minute install. There are other nice gauges out there no doubt.

BTW- if you want to get away from all the regens, you may want to look into a GDE tune from Green Diesel Engineering. Its an ECM swap. Guys over at the other forum are having great results with far fewer regens more torque, less turbo lag, and better mileage. I'm dropping one in later this year. Jay