Wacky question: % Regen, % DPF?

[Simpliciter]

Here’s a wacky question:

Seems as if the DPF is costing us 2-3 mpg. Anyone know what percentage of that is (a) extra fuel used to push the exhaust through the filter, and (b) what percentage is extra fuel used on regen to burn up the accumulated soot?

Suppose (fantasy!) you could come home each night, tap the filter over a bucket, and dump out the soot. Kind of like cleaning out a fireplace. No more regen -- but while driving you would still be pushing your exhaust through the DPF. How many mpg would that save?

Totally useless question ... just can’t keep that curiosity down ()

-Brian

[joshcdsi]

My bet would be that 90% of the mileage reduction is from the regeneration process. I say this because if I make it through a tank with no obvious regen my mileage is better. Also, I can see my mileage tick down when regen is going on.

[FORDSVT9802]

I hate it when my truck goes into Regen. Yesterday the damn thing sat for 30min in Regen and I got so sick of it sitting there burning fuel I just shut the damn thing off. Then what do ya know as soon as it warmed up this morning went back in Regen all the way to work Burning up the $4 per gallon fuel!!!