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4th Gen Duramax LMM 2007.5-2010 Discuss all stock related Duramax LMM engine issues

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  #1  
Old 10-07-2008, 02:52 PM
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Default differences between lmm and lbz

as far as i know the lmm is the same as the lbz. just take off the dpf and your basically looking at an lbz. as i found out there are a few differences between the two, like when i went to the dealer pointing out things that i didnt see on the lbz. but essentially it is the same, so with that being said will a majority of the aftermarket parts that are made for the lbz fit the lmm, since there are not a whole lot of parts being offered yet. ie down pipe, turbos, injectors.....just wondering so i dont have to wait for the "LMM parts" to come out.
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Old 10-07-2008, 11:32 PM
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Down pipe-yes, turbos-yes, injectors-IDK but I would think yes, exhaust-yes, egr blocker plate-no.
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  #3  
Old 10-08-2008, 05:10 AM
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keep in mind, when deleting emissions from the LMM, not only will you see drastically improved mpg and power, but also void any warranty you may have had.

With that aside, pretty much anything for the LBZ will fit the LMM, from a performance standpoint.
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Old 10-08-2008, 10:26 AM
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I would talk to your dealer, i have talked with people and had my truck in the shop with DPF off and no problems. One guy had a seal go out of his turbo, and the warranted, with his straight exhaust and tuner on.
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  #5  
Old 10-08-2008, 10:03 PM
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thanks. yeah i dont care for the emissions stuff anymore or the warranty. i want my mileage to be where its supposed to be. i drive from cali to az everyweekend then back so i need all the help i can get. besides i need power and the dpf keeps me from that. thanks for the help by the way. cant wait to change that down pipe after seeing the stock one.
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Old 10-08-2008, 10:05 PM
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let me know how I can help, the increased mpg and power is waiting for you !!!
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Old 10-08-2008, 10:13 PM
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and i will
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Old 10-09-2008, 10:51 PM
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Injectors are diffrent 6 hole ours vs lbz 7 hole we have solid push rods lbz do not big asss egr is diffrent on our trucks and a few other odss and ends
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Old 10-12-2008, 10:20 AM
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have you guys also noticed the oil cooler line that runs next to the drivers side exhaust manifold at the end? those of you who have the lmm and have done the bd manifold install know what im talking about.
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Old 10-12-2008, 11:25 AM
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oil cooler line ?
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