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Old 02-18-2016, 10:21 AM   #13 (permalink)
oil pan 4
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
90 day: 19.5 mpg (US)

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When the dpf is deleted people are typically claiming a +5MPG improvement on ford 6.4L and 6.7L Cummins guys are claiming a 2 to 4 mpg improvement. Even ford claims that a dpf regeneration cycle can use up to 17 liters of fuel.Q
Nothing I have found any where supports the claim that the dpf system does not hurt fuel economy.
The dpf system on a diesel is nothing like the catalyst system on a gasoline engine. I believe that the converter on a gas engine has little to no effect on fuel economy.

If you dont live some where smog is a problem then getting over all lower fuel economy and burning up to 17l of fuel to reduce NOx, make your diesel particulate smaller and more harmful is irresponsible.
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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