Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

lb7 tuned

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Old Jun 21, 2010 | 09:40 AM
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Anyone tinkering with tuning on here just made 505hp 1042tq want more if it's possible think im gona need a bigger turbo though getting really smokey
 
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Old Jun 21, 2010 | 10:13 AM
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How did you tune it?
 
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Old Jun 21, 2010 | 01:33 PM
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i play around with it, made ~450hp no big deal...



... at 4500rpms with a stock turbo
 
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Old Jun 22, 2010 | 10:22 AM
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efi live
 
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Old Jun 22, 2010 | 01:27 PM
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how big of a pulsewidth are you running from 24-3200rpms
 
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Old Jun 23, 2010 | 12:16 AM
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2300
 
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Old Jun 23, 2010 | 01:38 AM
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Originally Posted by lb7 doctor
2300
stock injectors and CP3?
 
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Old Jun 23, 2010 | 01:52 PM
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pw that low and that kind of power kinda tells me hes not runnin stock injectors.

thats a nice n low pw too. at 3200rpms the injectors are open for roughly ~44* of crank rotation.

compared if someone were to have a 3000Us pulsewidth at 3200 rpms and have injectors open for roughly ~57*
Most people would run that kind of pw or more to make the same power
 
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Old Jun 23, 2010 | 11:32 PM
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30% injectors 42% industrail injection pump fellows!
 
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Old Jun 23, 2010 | 11:37 PM
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sweet. i had a modded pump on mine for a while till i brokded my engine, it was so awesome
 
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