Duramax Diesels Forum Truck of the Week
  #1  
Old 03-28-2017, 06:30 PM
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TheBac TheBac is offline
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Default BPUs for the LMM

Opening this thread to start accumulating info on Basic Performance Upgrades for the LMM engine platform.
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Old 03-28-2017, 06:41 PM
N2BRK N2BRK is offline
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EGR Blocker plate
EFI Live
Transgo Jr and flushing out with Transynd
DPF delete
3" Downpipe
PCV reroute
Routine flushing of hydroboost unit
Sleeves and DHD brace
Leave the damned airbox and factory filter alone with stock turbo, lol
Run additive of choice at every fillup to keep injectors happy
Ebay fender liner door mod to make it easier to change fuel filter
Upgrade fuel filter to Nictane with Donaldson and water separator bowl
Monitor with EGT alarm
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08 LMM Crew 4x4
Dipper Trans/Mark's 68mmStg2R/40 over LBZ tips
Exergy 12mm

Last edited by N2BRK; 03-28-2017 at 07:12 PM.
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  #3  
Old 03-28-2017, 07:10 PM
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Exhaust if you don't mind getting rid of the DPF
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2008 CC/SB LMM SLT
EFI by Idaho Rob | 5in Straight Pipe | Isspro Ev2 Gauges | Titan 52gal Fuel Tank | Banks Intake/Filter | DJM 3in Drop Shackles | PCV Reroute | Custom Power Steering Cooler

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Old 04-03-2017, 05:30 PM
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Trans lines. GM will warranty them at 125K miles or less but if they aren't leaking now they will.


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2008 LMM :SOLD 2/18
4" MBRP TB AXLE DUMP, EFI IDAHO ROB, PPE RAIL PLUG, S&B AIR, PPE TRANS COOLER, FLEECE TRANS LINES, AIRDOGG 165, EDGE CTS, KRYPTONITE STEERING RODS AND KRYPTONITE IDLER, COGNITO STEERING BRACES, COGNITO DIFF MOUNT, BARS TURNED DOWN AND DROP SHACKLES ON REAR, ALL OTHER PM (REROUTES AND DELETES) PAINT PAINT PAINT

2004.5 LLY :SOLD 2/15
5" TB EXHAUST, FASS LIFT PUMP, PPE TUNE, PUMP RUB, MOUTHPIECE, PAINT PAINT AND PAINT
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Old 04-03-2017, 05:41 PM
N2BRK N2BRK is offline
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flush the dex-cool regularly to avoid sludgy brown shit
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08 LMM Crew 4x4
Dipper Trans/Mark's 68mmStg2R/40 over LBZ tips
Exergy 12mm
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Old 04-03-2017, 05:42 PM
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Looks like the basic stuff is covered. LMM is one of my favorite engine codes! Mine did 488 977 with a ppe programmer on level 5, totally stock truck including exhaust...
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Old 04-03-2017, 05:54 PM
N2BRK N2BRK is offline
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One honorable mention for me is the True Trac. My g80 was the most finicky sob out there. The TT is one of those "why didn't I do this sooner".

Check your transfer case fluid level regularly. Or drain and fill with 2.5qts of 5w/30 synthetic engine oil, through the speed sensor hole.
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08 LMM Crew 4x4
Dipper Trans/Mark's 68mmStg2R/40 over LBZ tips
Exergy 12mm
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Old 04-03-2017, 05:58 PM
N2BRK N2BRK is offline
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Fumoto valve for oil changes

Transfer case filter has a magnet to reuse that lives above it. Don't lose it. Bought it used? See if it's missing.
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08 LMM Crew 4x4
Dipper Trans/Mark's 68mmStg2R/40 over LBZ tips
Exergy 12mm
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Old 04-03-2017, 06:08 PM
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Default BPUs for the LMM

If you tow a lot of weight or have lots of stopping and going maybe look into an LML hydro boost for better pedal feel and response


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2008 LMM :SOLD 2/18
4" MBRP TB AXLE DUMP, EFI IDAHO ROB, PPE RAIL PLUG, S&B AIR, PPE TRANS COOLER, FLEECE TRANS LINES, AIRDOGG 165, EDGE CTS, KRYPTONITE STEERING RODS AND KRYPTONITE IDLER, COGNITO STEERING BRACES, COGNITO DIFF MOUNT, BARS TURNED DOWN AND DROP SHACKLES ON REAR, ALL OTHER PM (REROUTES AND DELETES) PAINT PAINT PAINT

2004.5 LLY :SOLD 2/15
5" TB EXHAUST, FASS LIFT PUMP, PPE TUNE, PUMP RUB, MOUTHPIECE, PAINT PAINT AND PAINT
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  #10  
Old 04-21-2017, 10:28 AM
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Bulldogr6 Bulldogr6 is offline
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Quote:
Originally Posted by N2BRK View Post
EGR Blocker plate
EFI Live
Transgo Jr and flushing out with Transynd
DPF delete
3" Downpipe
PCV reroute
Routine flushing of hydroboost unit
Sleeves and DHD brace
Leave the damned airbox and factory filter alone with stock turbo, lol
Run additive of choice at every fillup to keep injectors happy
Ebay fender liner door mod to make it easier to change fuel filter
Upgrade fuel filter to Nictane with Donaldson and water separator bowl
Monitor with EGT alarm
Not to side track the thread but I am wondering something, I have the Nicktane / Cat adapter up front but am wondering about the Donaldson filter with the bowl you speak of. Is there a thread where this is talked about ?

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Old 04-21-2017, 10:46 AM
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Quote:
Originally Posted by Bulldogr6 View Post
Not to side track the thread but I am wondering something, I have the Nicktane / Cat adapter up front but am wondering about the Donaldson filter with the bowl you speak of. Is there a thread where this is talked about ?
The Cat filters (typically) don't have water separators in the filter. The Donaldson P553203 has a great micron rating and separates water from the fuel.
The glass bowl screws on the bottom so you can see if there is water without draining.
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2008 CC/SB LMM SLT
EFI by Idaho Rob | 5in Straight Pipe | Isspro Ev2 Gauges | Titan 52gal Fuel Tank | Banks Intake/Filter | DJM 3in Drop Shackles | PCV Reroute | Custom Power Steering Cooler

1983 c10/Cummins Conversion - On Hold

"I think we missed the turn..." - Somewhere in Baja
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Old 04-21-2017, 11:27 AM
N2BRK N2BRK is offline
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^^^ this
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08 LMM Crew 4x4
Dipper Trans/Mark's 68mmStg2R/40 over LBZ tips
Exergy 12mm
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Old 04-21-2017, 03:45 PM
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Quote:
Originally Posted by wilrob View Post
The Cat filters (typically) don't have water separators in the filter. The Donaldson P553203 has a great micron rating and separates water from the fuel.
The glass bowl screws on the bottom so you can see if there is water without draining.
Thanks you sir.

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