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| 2011+ LML Performance Parts Discussion Discussion of Performance Parts For the 07 and up LML Duramax Trucks No Advertising |
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| | eBay Motors #1 (permalink) |
| Junior Member Join Date: Jun 2012 Location: Murphy NC
Posts: 68
| LML Fuel System Upgrade? i am looking for suggestions on what i need to do for fuel system. I just installed my H&S tuner with down pipe back 5" exhaust and want to make sure i dont run outta fuel I have read some about people upgrading fuel filters and some about lift pumps but dont really know what i should be looking at to purchase
__________________ 2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro exhaust with down pipe, mini maxx |
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| | eBay Motors #2 (permalink) |
| DuramaxForum Veteran Join Date: Oct 2011 Location: TX
Posts: 1,001
| Unless you run the Hot tune, you don't really need to worry about running out of fuel. A lot of people use Air Dog or Fass lift pumps, though, and they seem to work well.
__________________ 2011 GMC 2500HD Duramax Z-71 CCSB SLE S&B Dry Cold Air Intake Ranch Hand Front and Rear Replacement Bumpers (Ridgid Dually Lights on Rear (2)), NFAB 6-Step Nerf Bars, RKI Tool Box, Custom Headache Rack w/ Ridgid Dually Lights (4) Limo Tint All Around w/ Limo Brow EDGE CTS Insight, Rancho Steering Stabilizer, Backup Camera 3/4" Lift via Torsion Bars (it was all I could get with stock keys), 285/65/18 Nitto Trail Grapplers GoLight Stryker HID XRT Pro on Tow with 4" Flo Pro Exhaust |
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| | eBay Motors #3 (permalink) |
| Senior Member Join Date: Feb 2012 Location: Breckenridge, MI
Posts: 605
| does your mini maxx show rail pressure? sorry i don't know much about h&s or LMLs for that matter. But if you can watch your rail pressure and your desired rail pressure then you will be able to tell if your running out of fuel or not.
__________________ -Trent- 2008 LMM 2500HD, MA-700, MBRP 4'', K&N cold air intake, EFI Live from Diesel Addiction, edge insight, PPE lift pump, egr blocked, 33'' Goodyear duratracs on 20" XD Misfits, de-debadged,smoked tail lights and cab lights, halo headlights, black grille, leveled with keys, B&M gooseneck hitch, air ride air bags with compressor, Alligator tie rod sleeves, PPE shim kit,Rough Country 6'' Lift Powdercoated Orange, 35w 5000k HIDs highs, lows and fogs WAITING TO BE INSTALLED - PCV reroute, Ppe rear diff cover, inline filter kit >>>build thread<<< ![]() |
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| | eBay Motors #4 (permalink) |
| Senior Member Join Date: Apr 2012
Posts: 268
| Well you might be draining the rail on your hot tune at wot but maybe not. If you can check your rail pressure and see if your actual is keeping up with desired. Also a lot of guys add lift pumps like the air dog for better filtration alone and not just for the performance end. That's the main reason I'm adding one and the help it gives the injection pump is nice to. |
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| | eBay Motors #5 (permalink) |
| Junior Member Join Date: Jun 2012 Location: Murphy NC
Posts: 68
| i do have it on the hot tune (performance) right now, i was waiting for this rain to stop so i can do the trans relearn. i dont if i will leave it at that or turn it down
__________________ 2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro exhaust with down pipe, mini maxx |
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| | eBay Motors #6 (permalink) |
| Duramax Lifetime Supporter Join Date: Apr 2012 Location: Casa Grande, Az
Posts: 2,163
| If you want your tuned truck to last, install a lift pump.period. It will run out of fuel on the highest tune with the pedal to the floor and I haven't heard of anyone putting it on the hot tune and not letting her rip at least one time Matter of fact, I would have a lift pump even without a tune, just because of some of the horror stories I've heard with the newer injection pumps failing.
__________________ 2012 GMC 2500 SLT 4x4 H&S minimaxx, MBRP downpipe back SS duals, Insight CTS w/backup cam, Fass HD150, PPE rear diff cover, Amsoil front to rear w/by-pass Cognito 4-6 NTBD w/idler/pitman braces, a-arms, Monster energy 18x9 w/BFG KM2s 35x12.5, Recon smoked cab lights Titan 57 gal saddle tank, linex color matched bedliner w/kevlar, Trekstep bed steps x2, RBP rail steps |
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| | eBay Motors #7 (permalink) | |
| Junior Member Join Date: Jun 2012 Location: Murphy NC
Posts: 68
| Quote:
__________________ 2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro exhaust with down pipe, mini maxx | |
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| | eBay Motors #8 (permalink) |
| Junior Member Join Date: Jun 2012 Location: Murphy NC
Posts: 68
| i dont really get on my truck, just every now and then and its such a beast (for a truck) that i dont think i have pushed the pedal all the way down just because i have not had the need to. i just want to make sure i dont run into the any problems later on because i didnt do something i should have.
__________________ 2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro exhaust with down pipe, mini maxx |
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| | eBay Motors #9 (permalink) |
| Senior Member Join Date: Apr 2012
Posts: 268
| The air dog kit comes with pretty much everything needed but tools for the install. I'm putting mine on later this month and am planning on putting the catipilliar filter on the air dog once the filter that came with it is used up 8-10 thousand miles I'm thinking. That should give you what you want for you flow to. |
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| | eBay Motors #10 (permalink) | |
| Junior Member Join Date: Jun 2012 Location: Murphy NC
Posts: 68
| Quote:
__________________ 2012 GMC 2500HD Cognito leveling kit, 275/65 20 Toyo MT on 20x9 chrome Fuel Octane wheels, trex billet grills, 5" flow pro exhaust with down pipe, mini maxx | |
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