LML vs L5P: Gas Mileage. It seems GM does pretty good with it's oil life monitor, tire pressure monitor, & now fuel economy monitor devices. help Reddit App Reddit coins Reddit premium Reddit gifts. A DIESEL PERFORMANCE MODULE WILL RESTORE YOUR DIESEL'S TRUE POTENTIAL: Part # 21200 Fits: 2011-2014 GM Duramax 6.6L LML POWER AND FUEL ECONOMY PERFORMANCE! It just seems that the bar graph/trip A is optimistic compared to gallons used/miles travelled. WAY TO GO! The Edge simply reads the computer from the OBD2. 9. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Now that summer is here and I don't use my remote start as much I am averaging 19-20mpg. I have seen a few threads here on the LML where people were banging on their poor fuel mileage. Duramax. I've been averaging 13 mpg for awhile now and I don't understand why its so low. Duramax Fifth Generation: 2011-2016 (LML). The idle is back to normal and I'll see if the milage comes back. Occasionally on trips i range from 70-75 mph with indicated mpg of 24-22mpg. Includes key design features, engine specs, horsepower/torque ratings, and more.   Your previous content has been restored. Description. Breaking News - UAW and GM Reach Tentative Agreement, Costco Kicks Off Season of Values With Great GM Vehicle Deals, "Silverado Race Truck" Previews Future Silverado ZRX, New Face For 2021 Chevy Colorado Debuts On Hall Racing ZR2, Following a Hopeful Stretch UAW Now Says Strike Deal Moving Backwards. Comes with 4-stage HP selector (stock-30hp-60hp-90hp EZ Plug-n-Go technology that you can install "in minutes" by simply connecting to your engine's wire-harness with factory style connectors. Your 6.0 cant tow what a Duramax can and your unloaded fuel mileage is much worse as well. usually within .2 or so +/-. Not sure if the Dmax is different but the mileage on my gasser is very accurate to actual. Forum: Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. 4.1k. It’s extremely susceptible to failure from bad diesel fuel or lack of lubrication. Hi all, I recently purchased a 2016 2500 HD with the Duramax engine. How accurate is the fuel mileage displayed in the Drivers Info Center? Great gas mileage doesn’t usually come to mind when talking about trucks. The Duramax has proven to be a reliable engine since its introduction back in 2001. Over-sized tires that have not been corrected for in the vehicle’s on board computer Fuel mileage. Marc Russ, November 16, 2016 in 2015-2019 Silverado HD & Sierra HD. My 2015 2500HD crew cab 2WD on the freeway from CA to Oregon and back posted slightly over 20 mpg. You don’t have to settle for the performance of your L5P engine straight from the factory. History of truck bought brand new drive it to tire shop put 35's on it drive it home ppei was on door step 60 miles on truck deleted tuned on big tune. It says I'm averaging around 15/16 mpg but when I go to fill up I'm only getting about 13.8 mpg when I figure the gallons used vs. miles driven. Don't ever let the thing go below 1/4 a tank. × In fact auto manufacturers are not required by the EPA to post or publish fuel economy numbers for 3/4 and 1 ton trucks. Paste as plain text instead, × December 17, 2018; ... with its labyrinthine-like exhaust after treatment also contributing to poor fuel economy, diluted engine oil and reduced long-term engine longevity. It says Im averaging around 15/16 mpg but when I go to fill up Im only getting about 13.8 mpg … When it breaks, it often takes the injectors out with it. Mine seems to be accurate within .2-3 as well. Now actual seems to have settled in right around 1mpg less than dic. After install, averaged 17-19 mpg. The Bosch CP4.2 injection pump on the LML Duramax is coined a “Ticking time bomb” by many people familiar with the LML platform. Great gas mileage doesn’t usually come to mind when talking about trucks. So naturally, the more fuel trucks receive, the better. Now 89,000 later truck is getting 13-14 at best hand calculated and dic . Within .1. I've noticed that the 400 mile reading is usually pretty close to my trip reading by the time I'm ready to fill up. Join. Webasto Hollandia Sunroof, Carbon Fiber Interior Trim, color matched bug shield & vent visors X-treme coating bedliner, Access roll top cover, Westin Step Bars, Lubrication Specialists Aux fuel filter, coolant filter, CAI, Michelin LTX tires, Manual High Idle Mod, Bilsteins, prodigy brake controller, raintracker rain sensing wiper controller, Remote autolocking tailgate, Reese Titan Class V hitch, Allison badges, Pinstriping by Bob Spencer, 4x4 decals removed, color matched door handles, 4 headlight mod, Homelink console. Then I got a check engine light with a P24A0. Those tanks the dic was figuring 2.5-3mpg better than actual. Morimoto HID. Poor fuel mileage and high diesel prices affect your wallet... especially if you make a living with your truck because every fill-up cuts into your bottom line. Like all Duramax engines from ’01-’10, the LML was also void of a lift pump from the factory. I don't have any illusions though. Welcome to Duramax.   You cannot paste images directly. Toggle menu 1-877-367-9351 PS. My commute to work is a little over 30 miles - mostly highway - so my 'last 25' reading is usually pretty high (low 20s). Step 1 2012 Silverado Duramax Diesel 3500 HD Dually Crew Cab LTZ 4X4 in Mocha Steel Metallic, http://www.dieselplace.com/forum/63...ot-impressed-my-2016-its-pulling-power-7.html, Duramax First Generation: 2001-2004 (LB7), Duramax Second Generation: 2004.5-2005 (LLY), VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. ... placing its real-world fuel economy at 19.91 mpg. Every tank since deleting, has been 400+, filling up once a month instead of twice a month. The associated cost of this is about $10k and it’s not covered under warranty because it is caused by poor fuel. 2015 Chevy Silverado 2500HD, 8700lbs, 550 miles avg 20.1mpg, 2015 Chevy Silverado 2500HD Duramax/Allison. The associated cost of this is about $10k and it’s not covered under warranty because it is caused by poor fuel. I drive mostly city and was getting close to 15 mpg in my 2012 3500HD Dually. Tripometer is at 5000 for that read. Members. The LML was introduced for the 2011 model year and currently remains in production for GMC/Chevrolet HD pickups. Tips on performance, fuel economy, troubleshooting and more. We explain the five basic things you can do to increase the fuel mileage and economy of your Powerstroke, Cummins, or Duramax diesel pickup. A reviewer has tested the fuel economy of the 2020 GMC Sierra AT4 with the 6.6-liter Duramax V8 engine on a highway/city test loop. This de-tuning over the past 10 years has caused diesels to drop from 20-25 MPG down to NEW trucks averaging 14-16 MPG. All of these results have been obtained by running one complete tank which usually includes a regen. I noticed that my truck was staying in regen because my idle was stay high around 800-900 rpm for a few days. Doesn't seem to be any rhyme or reason. I believe it’s a tuner on my new lml. 12.7 on a 2016 and that is country driving, empty and some freeway. XDP carries all the parts and accessories you need for the best diesel performance. It was all sooted and clogged not allowing the DPF it to reach temp during regen. save. DIC indicates 20-22 mpg at speeds ranging from 75-80. LML vs L5P: Gas Mileage. It's no secret that a Duramax diesel is not known for fuel economy. Nice to hear. Super accurate. My buddies here at work have LML's (2011 and 2012) that are both tuned by Kory Willis at PPEI and both lifted like i am on 35's and they're getting much better fuel mileage I am. Generally, most owners and service techs are well aware of the importance of keeping a clean fuel system by running clean, high quality fuel, lubricity additives, and routine fuel … Join the thousands of diesel truck owners why discovered the best way to increase your Powerstroke, Duramax, and Cummins diesel truck's fuel mileage is to upgrade with a MPG Performance Module. Recently my milage dropped down to 11. 2012 CCLB 3500HD Z71 Appearance Package Dmax/Alli. Larger tires and poor driving habits will skew mileage downward. After deleting the DPF/CAT expect to get a combined mileage of 18-19 mpg. The biggest concern on any LML is the CP4 internally combusting. You hear that, GM? Speaking of fuel, the LML was the first Duramax to be able to run on a B20 blend of biodiesel. My F150 had the whole thing on one screen for trip A and B. Gallons used, miles, and then MPG's. I also have a '14 6.0 HD Chevy that gets 12mpg average and I could not be happier with it, zero emission issues, zero problems, no worry about water in fuel, no $10,000 engine option. at 28,000 miles, got a message to service DEF system. Some duramax's have great mileage out and others are worst. If you have an account, sign in now to post with your account. Duramax History, Lesson 4: LMM. Display as a link instead, × In 2011, federal emissions regulations had tightened, so additional measures had to be taken to keep the Duramax compliant, so the LML was the first to be equipped with Selective Catalyst Reduction (or SCR), a system which used a urea-based exhaust fluid to break down harmful nitrogen oxides. 1 Posts . love it! More or less depending on the severity of the restriction. Clear editor. Maybe up to 10 now. By By the time I'm ready to fill it up, I can pretty much rely on the 'last 400' reading to match the 'trip' reading... both of which are pretty close to hand calculated at the pump. Online. Never hand calculated but when on long road trips I drive 600 miles and when my DIC indicates 100 miles until empty I have about 1/8 of a tank left. S&S Diesel Motorsport, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine.The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4.2 with a tried and true, bulletproof CP3 high pressure fuel pump. L5P (2017+) LML (2011 - 2016) LWN (2016+)(2.8L) LMM (2007.5 - 2010) LBZ (2006 - 2007) ... it will now report 17.6mpg on the same trip using the same fuel. 24 comments. If you run big tires, a lift kit, drive faster than this window your mileage will suffer. You guys CAN do some things right! I assume the mileage math is on. By using this site, you agree to our Terms of Use. In fact auto manufacturers are not required by the EPA to post or publish fuel economy numbers for 3/4 and 1 … The bar tracks the past 25 miles, 50 miles, or 400 miles. I have a lift pump but no chip. Fits Chevy/GMC Duramax 6.6L LML (2011-2016) 2500HD & 3500 Horsepower Select Knob: *Stock*30 HP - Heavy Tow*60 HP - Best Mileage and Tow*90 HP - Mileage and Light Tow BENEFITS OF PRO MODULE Simple Install: EZ Plug-n-Play technology that you can install "in minutes" by simply connecting to your engine's wire-harness   Your link has been automatically embedded. Obviously you have some issue that you need to have looked at both with the truck and with you. New diesels today are loaded with emissions equipment. But most average in the 17s doing 75 down the interstate. Now hand calculated 19-20 on Hywy all day dic saying 23. Titan 2017-2019 L5P Duramax Crew Cab Short Bed 56 Gallon Fuel Tank 2017-2019 L5P Duramax Crew Cab Short Bed Titan 56 Gallon Fuel Tank.   Pasted as rich text. You can post now and register later. I've gone through a few tanks already at different pumps and it averages out to 33 gallons and around 460 miles traveled give or take. The LML Duramax also didn’t come with an OEM lift pump! I had to put a word in here about what I have found. This means that not only does the CP4.2 have to pressurize fuel as high as 29,000 psi before sending it to the rails, but it also has to pull its low pressure fuel from the tank. (2011-2016 LML) Duramax 6.6L PRO Performance Module installed in Dec 2019. Duramax LML Reliability. We explain the five basic things you can do to increase the fuel mileage and economy of your Powerstroke, Cummins, or Duramax diesel pickup. Initially mine was off .7mpg or so, with the exception of a few tanks or so that my trips were very short- 8mi. It is a 2016 with 27,000kms on it. Got 13,300 miles on the truck. By 2011, the Duramax lineup had already seen four major revisions, starting out with the LB7 in ‘01, moving to the LLY in ’04½, the LBZ in ‘06 and the LMM in ‘07½. So if your pulling light loads and that's what the truck spends most of its time doing then your golden. This means that not only does the CP4.2 have to pressurize fuel as high as 29,000 psi before sending it to the rails, but it also has to pull its low pressure fuel from the tank. In a struggling economy this is something you should not have to deal with. I know the brand and I feel the station make a difference. I generally get 16.5mpg on an unloaded tank. Discussion Starter • #1 • 9 mo ago. Some will say it's dead nuts accurate, some have larger spreads than I. Drinks all around! Performance built and designed this module to give you more working power (where you need it!) by about 2mpg on a long trip, I can push near 20 on the 15, while the 04.5 was around 18. May I ask a favor of a High Country Silverado owner? I'm getting 18/20 highway, 14/15 city. My 2012 seems fairly accurate.. always shitty millage because of a shitty DPF Congrats on the new Duramax though, Give that gal some good highway driving to keep the DPF happy and she'll treat you well. JavaScript is disabled. How accurate is the fuel mileage displayed in the Drivers Info Center? Shop Fuel Additive for the GM Duramax 6.6L 2011-2016 LML Fuel System! The last 400 miles my DIC is showing 20.4. Also where you live they may still be using winter diesel and of course that is roughly 2mpg less in winter than summer diesel. My regens are usually around 700 mile intervals lately. Like all Duramax engines from ’01-’10, the LML was also void of a lift pump from the factory. I had to put a word in here about what I have found. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. Chevy '16 2500HD LTZ CC, stock...for now. And while these modifications won't give you the gas mileage of a small commuter car, you can increase your fuel economy from three to six miles per gallon. For a better experience, please enable JavaScript in your browser before proceeding. × Fuel mileage prior to install ranged about 11-12 mpg. Dr. My name is Danny Voss, I have been working with the tuning department at Duramax Tuner on our emissions equipped truck to get the most out of our LML (2011-2016) Duramax "The Clean Sweep" is Calibrated Power Solution's Emissions intact pull truck designed to kick butt on the pull track and drive home like nothing happened.This truck is the true definition of a sleeper. Just keep in mind that that 100 miles to empty can quickly take a nosedive if your truck goes into a regen. If your DPF is plugged up your probably averaging about 13-14 mpg. It says Im averaging around 15/16 mpg but when I go to fill up Im only getting about 13.8 mpg when I … My question is about fuel mileage. A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Duramax LML Reliability. It’s not uncommon to hear claims of 18-20 mpg from LB7 owners, and even though the platform was plagued with semi-serious injector problems, some can be found with injectors that were replaced under warranty. Hi all, I recently purchased a 2016 2500 HD with the Duramax engine. How accurate is the fuel mileage displayed in the Drivers Info Center? I used it for long trips mostly. Many owners can brag about 2 and 300000mi service with very few if any issues. Fuel Mileage - Expect to see a significant increase in fuel mileage. In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. Are you comparing with the trip meters (A and /or B) or with the bar graphs? My old cummins farm dually 12 valve with 300k still gets over 15mpg and we drive it hard. The biggest concern on any LML is the CP4 internally combusting. Not only is this tank bigger, but it’s built to be durable. Reasons for under-reporting of mileage and falsely reported poor mileage: 1. So, by relying on an external fuel source for a DPF re-gen, the LML kept its oil free of any fuel dilution. It’ll usually suffer more than you expect; remember the aero power of 3. r/Duramax. Gain up to 5 MPG more miles per gallon with your diesel pickup. POWER AND FUEL ECONOMY PERFORMANCE! With its advertised output of 397hp and 765 pounds of torque, the LML was the most powerful Duramax to date. So effective are the EZTuner mileage tunes at giving you both optimal fuel mileage and power gains, that it makes other performance products nearly obsolete with its 30 Day Satisfaction Guarantee. As the first Duramax platform offered by GM for their 2500HD and 3500 line-up, the LB7 offers a good mixture of power and fuel mileage. Powered by Invision Community. GM 6.6 Duramax diesel tips for fuel system diagnosis The Duramax diesel has proven to be a very reliable design. 06-07 LBZ & LLY Duramax Powertrain. 6.6L Duramax LML specifications & information, GM's latest version of the Duramax diesel. Took it to the dealer yesterday and they had to replace my indirect injector. Upload or insert images from URL. HERE IS THE PROBLEM AND HOW YOU CAN FIX IT! I do 90% city driving and had never gotten barely over 300 miles a tank.
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