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| 06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect |
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11-12-2012, 07:56 AM
| eBay Motors #1 (permalink) |
| Junior Member Join Date: Oct 2012 Location: Southampton, MA
Posts: 28
| Best combo for improved MPG, less focus on all-out power So, to describe my truck (yes, I am a complete n00b, but I've been lurking for awhile now)... My LBZ's engine/trans is stock save for... -Banks turbo-back with no cat -EGR block off with electronic finger stick -S&B CAI -Banks EGT and boost gages -BD driver's side exhaust manifold All the work was done by the previous owner that traded it in to my dealership...I have not touched the truck mechanically, drove it as my demo for almost a month, and bought it Saturday. I have been getting 15 MPG when adjusting for speedo error (truck has fresh 285/65/18 Silent Armors)...a 14.5 MPG tank included 100 miles of towing 6,500 lbs with my gooseneck horse trailer. I would like to improve MPG...more power is awesome, but less critical than an MPG bump. I like how this "lightweight" regular cab 4x4 hauls ass  It would appear to me my best option is EFI Live through Rob, while adding an AirDog lift pump. Is this accurate? I admit I may take the truck to the track once or twice to see what it will do, but I have 3 Camaros for that stuff Longevity and MPG are my 2 most important things. Admittedly, the truck is not a DD, and due to its pre-emissions status, I will probably hold onto it for the next 6-10 years, adding 5-7k a year to the 87k it currently has. Awesome forum, BTW... I have been on several GM forums over the years, and this one appears to me to be the diesel truck equivalent of LS1 Tech, which is a high compliment IMO....
__________________ 07 GMC LBZ W/T Reg Cab -Bright red, 86k, A/C, Allison...and not much else! -Banks turbo back, S&B CAI, lifted 3" on 285/65/18 KMC XDs and Silent Armors 2000 Camaro SS -Black, 10k, LS1, 6 speed, T-tops, every SLP option 1997 Camaro Z28 30th Anniversary -White/Orange Stripes, 74k, LT1, 6 speed, T-tops, bolt ons 1988 Camaro IROC 350 -Grey, 23k, L98, AT, T-tops - Stock and Gorgeous 1999 Wrangler Sport 2004 Grand Prix GTP Competition Group - Wifey's car has got a blower!! |
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11-12-2012, 08:09 AM
| eBay Motors #2 (permalink) |
| Senior Member  Join Date: Aug 2012 Location: New Hampsha'
Posts: 948
| Drive like grandpa, thats one way to help the mpg. If you enjoy the haul ass-ness, you wont enjoy the mpgs, Im in that same boat right now 
__________________ Chad 04.5 4x4 ~123k miles DE 4", LBZ MP, KoryWillis Go-go Juice, Insight CTS, ADII, 8' Fisher 'If 40 is the new 20, smoke stacks are the new red car syndrome' Dirtymax this, Dirtymax that...  I like my max's clean |
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11-12-2012, 08:38 AM
| eBay Motors #3 (permalink) |
| DuramaxForum Fanatic  Join Date: Jun 2009 Location: Bulverde, TeXaS
Posts: 6,196
| Here's a little tip, pay attention to your EGT gauge. Keep the egts as low as possible as often as possible. The more fuel you burn, the hotter the exhaust gets.
__________________ Sean 2003 Lb7 2wd Dropped Efi Live by Rob Coddens s472 |
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11-12-2012, 08:39 AM
| eBay Motors #4 (permalink) |
| DuramaxForum Veteran  Join Date: Sep 2012 Location: South Whitley, IN
Posts: 1,250
| EFI Live will help with the mpg's quite a bit
__________________ The Sound Of Madness 2004.5 LLY ECSB EFI Live, MA700 Trans, Airdog 2 165, MBRP 5" with 6” tip, Profab Downpipe, LML Manifold, LBZ Mouthpiece, AFE Stage 1 Intake, EGR Blocked, PCV Rerouted, Resonator Plugged, ADP Race Valve, MA Rear Housing Support, MA Pump Rub Fix, Rancho RS9000xl's, Amsoil Synthetics, Autometer Cobalt’s Boost & Pyro, Tint (5% back, 20% front), HID's, US Speedo Custom LED Gauge Cluster, Line-X’d rockers To Come!! :Profab EGR Delete 4094vvt 40% overs |
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11-12-2012, 08:39 AM
| eBay Motors #5 (permalink) |
| Go Green!    Join Date: Jun 2010 Location: Coeur D'Alene Idaho
Posts: 4,478
| ^ true story
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11-12-2012, 08:48 AM
| eBay Motors #6 (permalink) |
| ATPTRUCKS  Join Date: Sep 2009 Location: Boise, ID
Posts: 10,851
| If you already have an exhaust, egr blocker, and intake. EFILive is defiantely the next step and will net you the most MPG gains! let me know if i can help get you into some Idaho Rob tuning 
__________________ Dustin im 22 and yes i bought my trucks myself Blackout :06 GMC lbz 4x4 Built motor, SDP twins, exergy Injectors, Self built trans White Thing :07 Chevy lbz 4x4 Caged and built to the hilt  Special thanks to: Mike L, Gtrippin, IdahoRob, SDP, ISSPRO, Yukon, and Cam at AP LIKE US ON FACEBOOK! Adrenaline Truck Performance IDAHO ROB 208.685.1000 |
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11-12-2012, 11:58 AM
| eBay Motors #7 (permalink) |
| Junior Member Join Date: Oct 2012 Location: Southampton, MA
Posts: 28
| Before I do EFI Live, do I need a new lift pump? Reading archives, there appears to be some argument on that...
__________________ 07 GMC LBZ W/T Reg Cab -Bright red, 86k, A/C, Allison...and not much else! -Banks turbo back, S&B CAI, lifted 3" on 285/65/18 KMC XDs and Silent Armors 2000 Camaro SS -Black, 10k, LS1, 6 speed, T-tops, every SLP option 1997 Camaro Z28 30th Anniversary -White/Orange Stripes, 74k, LT1, 6 speed, T-tops, bolt ons 1988 Camaro IROC 350 -Grey, 23k, L98, AT, T-tops - Stock and Gorgeous 1999 Wrangler Sport 2004 Grand Prix GTP Competition Group - Wifey's car has got a blower!! |
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11-12-2012, 12:13 PM
| eBay Motors #8 (permalink) |
| ATPTRUCKS Join Date: Sep 2009 Location: Boise, ID
Posts: 10,851
| not necessarily.
__________________ Dustin im 22 and yes i bought my trucks myself Blackout :06 GMC lbz 4x4 Built motor, SDP twins, exergy Injectors, Self built trans White Thing :07 Chevy lbz 4x4 Caged and built to the hilt Special thanks to: Mike L, Gtrippin, IdahoRob, SDP, ISSPRO, Yukon, and Cam at AP LIKE US ON FACEBOOK! Adrenaline Truck Performance IDAHO ROB 208.685.1000 |
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11-12-2012, 01:03 PM
| eBay Motors #9 (permalink) |
| Go Green! Join Date: Jun 2010 Location: Coeur D'Alene Idaho
Posts: 4,478
| naw. you will need one if you are getting built tranny tunes. but at that point you could be kissing mpg goodbye due to a heavy foot. a lift pump is nice for keeping your fuel clean tho
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11-12-2012, 04:02 PM
| eBay Motors #10 (permalink) |
| Junior Member Join Date: Oct 2012 Location: Southampton, MA
Posts: 28
| Thanks for the expert opinions I believe the less I mess with things, the less likely I am to have an issue. Something with a 50-75hp tow tune that gives a small improvement in fuel mileage, and has a non-towing tune with a good bump in MPG, is primarily what I am looking for. I know keeping my foot out of it will help a ton, as well. Its so hard to do!I can't imagine ever going over a 75hp bump unless I had something to prove at the track :lol: I will be doing some additional EFI Live research, then will contact vendors through here. If all I need to do from here is add EFI Live, that is huge...thanks for the help!
__________________ 07 GMC LBZ W/T Reg Cab -Bright red, 86k, A/C, Allison...and not much else! -Banks turbo back, S&B CAI, lifted 3" on 285/65/18 KMC XDs and Silent Armors 2000 Camaro SS -Black, 10k, LS1, 6 speed, T-tops, every SLP option 1997 Camaro Z28 30th Anniversary -White/Orange Stripes, 74k, LT1, 6 speed, T-tops, bolt ons 1988 Camaro IROC 350 -Grey, 23k, L98, AT, T-tops - Stock and Gorgeous 1999 Wrangler Sport 2004 Grand Prix GTP Competition Group - Wifey's car has got a blower!! |
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