Edited by Frank C, 24 April 2009 - 05:26 PM.
7 replies to this topic
#1
Frank C
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Posted 24 April 2009 - 05:26 PM
I was wondering MPG readings people are getting on their new Duramax/Hd2500 4x4 ?2008/2009
#2
Chris97K1500
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Posted 24 April 2009 - 09:17 PM
Stock with 245's, 15.3mpg city/highway 50/50. 18mpg Interstate @70mph.
Stock with 295's, 13mpg city/highway 50/50. 16mpg Interstate @70mph. (corrected for difference in tire size).
Quad on 90hp setting, no DPF with 295's, 15.5mpg city/highway 50/50.
Quad on 90hp setting, no DPF with 295's, Best of 21.4mpg @ 70mph, typically 19mpg on most Interstate trips.
Quad on Econ setting, no DPF with 295's towing 14K 5th wheel, 9-11mpg depending on terrain.
The 50 and 70hp tunes are slightly lower on mpg's than the 90, except when I get on it, then the 90 can really decrease the mpg's as the cloud behind me gets pretty dark.
Chris
Stock with 295's, 13mpg city/highway 50/50. 16mpg Interstate @70mph. (corrected for difference in tire size).
Quad on 90hp setting, no DPF with 295's, 15.5mpg city/highway 50/50.
Quad on 90hp setting, no DPF with 295's, Best of 21.4mpg @ 70mph, typically 19mpg on most Interstate trips.
Quad on Econ setting, no DPF with 295's towing 14K 5th wheel, 9-11mpg depending on terrain.
The 50 and 70hp tunes are slightly lower on mpg's than the 90, except when I get on it, then the 90 can really decrease the mpg's as the cloud behind me gets pretty dark.
Chris
'08 Silverado LTZ CrewCab, Dark Blue Metallic, LMM Duramax/Allison, 4x4. added GM LED clearance markers and Chrome door handles, T-Rex billet grille with bumper insert. Toyo Open Country MT's 295/70R17's on ProComp 6001's, 17x9's. Airlift 5000, Magnaflow 4" SS Turbo back, Fleece Performance built SC1058, GMax6, EFIlive DSP5 by Duramaxtuner, ProFab EGR delete pipe, MBRP downpipe. Banks IC tube, Technicooler, intake and scoop. Bilstein 5100's, GoRhino Dominator III SS nerf bars.
'08 Forrest River Sierra 375QBQ 5th Wheel
'97 Chevy 4x4, SOLD!
'04 Cadillac Escalade ESV, loaded...
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#3
masterp2
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Posted 25 April 2009 - 08:05 AM
Using tuning that I developed, I get 22-24 mpg at 68 mph average, 1900 rpm.
http://members.cox.n... the Diesel.pdf
http://members.cox.n... the Diesel.pdf
MICHAEL, AKA KILLERBEE, EMAIL
Systems Engineer 04.5GMC 2500HD Sound deadening@idle=58 dB (C wt) reduction of 10-12dB (>75%)
Recent Articles:
I-FOG chemical cooling
OIL COOLING
INDUCTION HEAT-Thermal Feedback Primer
INTAKES
TUNING THE DIESEL Custom Tuning
Killerbee Performance
Systems Engineer 04.5GMC 2500HD Sound deadening@idle=58 dB (C wt) reduction of 10-12dB (>75%)
Recent Articles:
I-FOG chemical cooling
OIL COOLING
INDUCTION HEAT-Thermal Feedback Primer
INTAKES
TUNING THE DIESEL Custom Tuning
Killerbee Performance
#4
Frank C
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Posted 25 April 2009 - 10:27 AM
Stock with 245's, 15.3mpg city/highway 50/50. 18mpg Interstate @70mph.
Stock with 295's, 13mpg city/highway 50/50. 16mpg Interstate @70mph. (corrected for difference in tire size).
Quad on 90hp setting, no DPF with 295's, 15.5mpg city/highway 50/50.
Quad on 90hp setting, no DPF with 295's, Best of 21.4mpg @ 70mph, typically 19mpg on most Interstate trips.
Quad on Econ setting, no DPF with 295's towing 14K 5th wheel, 9-11mpg depending on terrain.
The 50 and 70hp tunes are slightly lower on mpg's than the 90, except when I get on it, then the 90 can really decrease the mpg's as the cloud behind me gets pretty dark.
DPF (Diesel particulate Filter) removal is there a kit to remove ? what are the consequeces of removing it other than smog? warranty?
Edited by Frank C, 25 April 2009 - 10:27 AM.
#5
BlackSilver
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Posted 25 April 2009 - 12:03 PM
DPF (Diesel particulate Filter) removal is there a kit to remove ? what are the consequeces of removing it other than smog? warranty?
The DPF can be deleted. Then you must move to Mexico, because it's a federal requirement.
Hans
3500HD LTZ CC LB DRW Go-power by Max & Allie
Proud Member #755 of the 3500 Dually Club
My truck has training wheels
3500HD LTZ CC LB DRW Go-power by Max & Allie
Proud Member #755 of the 3500 Dually Club
My truck has training wheels
#6
08 Black Max
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Posted 28 April 2009 - 01:43 PM
My truck is all stock except a few cosmetic details is below.
my avg including winter is 15.6 mpg with about 60% city / 40% highway miles
my tires are the factory 265/70 R17 and the miles is aprox 9800 or so miles on the clock.
my avg including winter is 15.6 mpg with about 60% city / 40% highway miles
my tires are the factory 265/70 R17 and the miles is aprox 9800 or so miles on the clock.
The B.A.T. Mobile (Big A$$ Truck)
2008 Silverado 2500 HD, DuraMax, 6 spd Allison, CC / LB, 4X4, Z71, LTZ, Black, Cargo Mangement System, Polished Stainless Tube Steps
2008 Silverado 2500 HD, DuraMax, 6 spd Allison, CC / LB, 4X4, Z71, LTZ, Black, Cargo Mangement System, Polished Stainless Tube Steps
#7
Bluedog
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Posted 30 April 2009 - 02:29 AM
DPF (Diesel particulate Filter) removal is there a kit to remove ? what are the consequeces of removing it other than smog? warranty?
The DPF can be deleted. Then you must move to Mexico, because it's a federal requirement.
And tear up your new truck warranty - it won't be any good after you take off the DPF and install the tuner you need to prevent codes...
I average 18.5 - 80% 75mph; 20% in town (2008 Crew Cab Long Box 4x4 3500)
Edited by Bluedog, 30 April 2009 - 02:30 AM.
#8
duradave
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Posted 26 May 2009 - 06:04 PM
My truck is all stock except a few cosmetic details is below.
my avg including winter is 15.6 mpg with about 60% city / 40% highway miles
my tires are the factory 265/70 R17 and the miles is aprox 9800 or so miles on the clock.
08 4x4 quad duramax avg. 16.70mpg 75% highway easy driving no pulling 245-75-16 high 19.03 low 13.88
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