23 MPG with EFILive - Chevy and GMC Duramax Diesel Forum

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post #1 of 32 (permalink) Old 08-04-2008, 11:59 AM Thread Starter
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23 MPG with EFILive

Just got my EFILive and two tunes from IdahoRob...Took a 420 mile trip (no trailer) with camping gear and 4 people and averaged 23.3 MPG according to my DIC...I know the DIC is not always right but I do know that I averaged above 20 MPG for the whole trip because I have 410 miles on a tank so far with 1/8 of a tank left...I haven't filled up yet but when I do I'll let you know when the hand calculated amount is...Just thought I'd let you know that we can get good MPG's if tuned properly with a light foot. The tranny shifted smooth. Love it.

'06 LBZ
Duramax
Allison Transmission
Stock tuned, EFILive tunes by IdahoRob, PPE hot +2 e.t. , MBRP duals, Autometer pyrometer and boost gauges, EGR blocker plate, PCV reroute, transfer case pump rub kit, 5w-40 Shaeffer synthetic engine, Amsoil 75w-90 differentials, Amsoil ATF in transfer case, Opti-Lube XPD fuel additive, Transynd transmission fluid, 65,000 miles

Last edited by pONSi; 08-04-2008 at 12:02 PM.
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post #2 of 32 (permalink) Old 08-04-2008, 12:51 PM
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Thats awesome!

Hot rodding duramax trucks since 2004
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post #3 of 32 (permalink) Old 08-04-2008, 01:10 PM
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Cool deal. Glad it is working out. I just came back from an event and put 450 miles on a tank. Hand calculated to 20.5mpg with the A/C on and mountain driving.

Keep us informed on the hand calc.

Thanks for the input!

2007 LBZ tow rig/Daily driver, stock engine 11.70 @ 115mph on #2, 677 HP, MPI Twins
23.5 MPG Diesel Power Challenge 2008
2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins


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post #4 of 32 (permalink) Old 08-04-2008, 02:00 PM
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I am heading for the smokey mountains on Wed., so i will do some testing too.

Hey rob, which tune should yeild me the best mileage? Tow tune or Race Tune?

KYLE

:rockin2010 Camaro SS LS3 426 HP:rockin
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post #5 of 32 (permalink) Old 08-04-2008, 02:13 PM
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Try one on the way over and the other on the way back. Usually a sanely driven race tune will get better mileage.

2007 LBZ tow rig/Daily driver, stock engine 11.70 @ 115mph on #2, 677 HP, MPI Twins
23.5 MPG Diesel Power Challenge 2008
2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins


EFI Live, Suncoast Dealer, Dmax Hotrod Parts
Adrenaline Truck Performance 208.484.3670
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post #6 of 32 (permalink) Old 08-04-2008, 02:36 PM
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Will do, thanks again.

KYLE

:rockin2010 Camaro SS LS3 426 HP:rockin
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post #7 of 32 (permalink) Old 08-04-2008, 03:07 PM
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I get my best MPG on my race tune as long as I keep my foot out of it.

John
05 4 door short bed 4x4 chevy LLY
EFI LIVE with McRat RACE tune, PPE Lift Pump, 4inch Turbo Back Strait Piped MBRP Duals, EGR block off, AFE stage 2 intake, Turbo resonator blocked off, 6000k HID kit, 305/75/16Super Swampers on stock rims, Auto Meter boost and pyro gauges, Killer sound system, Limo tint all the way around, Suncoast Stage IV built by me.

NO TALKING JUST LINE IT UP
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post #8 of 32 (permalink) Old 08-05-2008, 12:13 AM
Oh...... Squirrel!
 
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Wow I'd say thats impressive! Your giving me second thoughts on selling my EFI live. What size tires do you have? I'll get a good MPG report this weekend after a 400 mile trip im going on!

Jason
2006 Silverado 2500HD LBZ CC SB
Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns
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Performance: EFI Live Tuned by Blackout Performance, Custom Blackout Performance S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by Blackout Performance
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post #9 of 32 (permalink) Old 08-05-2008, 12:20 AM
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Wow thats pretty good. Do you get better millage with the race tunes because it is getting more fuel more efficently.

2002 Chevy LB7 Crew Cab
Bone Stock for right now!! Looking to add some real power>
16 inch Helo Rims and 285 Nitto Terra Grapplers

Thank you Duramax Forums
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post #10 of 32 (permalink) Old 08-05-2008, 07:30 AM
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Usually race tuning runs more timing and fuel pressure. Both help with efficency, to a point.

2007 LBZ tow rig/Daily driver, stock engine 11.70 @ 115mph on #2, 677 HP, MPI Twins
23.5 MPG Diesel Power Challenge 2008
2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins


EFI Live, Suncoast Dealer, Dmax Hotrod Parts
Adrenaline Truck Performance 208.484.3670
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