Wa_rWagon
09-24-2009, 01:46 PM
I am getting 10.7 MPG towing a 28’ trailer. After upgrading to a 5” turbo back exhaust and only changing the DPF and codes in the tune my MPG has gone up to 11.7. Tracked over the same 650 mile trip. No other tune changes made. (#2 diesel used.) This is only 1 day of testing, but, never seen this high MPG yet on this trip. It could go higher as the load in the trailer varies.
This 1 MPG improvement is literally 10%. :D
Some is the lack of regen fuel wasted.
In any case this $400.00 exhaust will pay for itself in 31 trips or just over 1 month. ~20K miles. Feel the cost of tighter emissions coming out of your pocket now? $2000.00 of diesel at $2.50 was wasted over the last 100K. Yet I had some $5.00 gal diesel so this was up to $4000.00 wasted for the DPF. You will feel this cost in goods shipped esp if the state of CA forces this on everyone there.
Loaded this heavy is proof that the ‘passive’ regens are not working on the LMM. It will insist on wasting fuel for an active regen. Towing this trailer should get things hot enough on the hills I am on for a passive regen.
This will take the 10% MPG loss I get for B99 Biodiesel use away. (I am in the 8’s MPG wise with B99 on this route.) Their was more B99 wasted due to longer regens from the poor post injection DPF cleaning design than I loose in economy from B99 use I bet. Stay tuned as I test this next.
This 1 MPG improvement is literally 10%. :D
Some is the lack of regen fuel wasted.
In any case this $400.00 exhaust will pay for itself in 31 trips or just over 1 month. ~20K miles. Feel the cost of tighter emissions coming out of your pocket now? $2000.00 of diesel at $2.50 was wasted over the last 100K. Yet I had some $5.00 gal diesel so this was up to $4000.00 wasted for the DPF. You will feel this cost in goods shipped esp if the state of CA forces this on everyone there.
Loaded this heavy is proof that the ‘passive’ regens are not working on the LMM. It will insist on wasting fuel for an active regen. Towing this trailer should get things hot enough on the hills I am on for a passive regen.
This will take the 10% MPG loss I get for B99 Biodiesel use away. (I am in the 8’s MPG wise with B99 on this route.) Their was more B99 wasted due to longer regens from the poor post injection DPF cleaning design than I loose in economy from B99 use I bet. Stay tuned as I test this next.