24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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Running odd after injector swap

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Old Feb 3, 2013 | 05:46 PM
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Default Running odd after injector swap

A kid in town installed 100hp injectors and now it has no power or seems dead above 2000rpm. He said he had a new lift pump put in and is running without any programmer. Could this be because the cross over tubes are not tight enough? Im just throwing ideas out...
 
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Old Feb 3, 2013 | 05:52 PM
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It's because he's on stock tuning... Just because he added a set of injectors doesn't mean it will make more power.
 
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Old Feb 3, 2013 | 07:07 PM
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Just went for a ride in the truck and i agree with you 100%. it seems to have a little more grunt but it still has stock timing, and de-fuel settings. It runs right up to 2000 and creeps to 2300. No missing no popping, everything sounds like it should. Sorry for posting before seeing truck first hand guys!!
 
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Old Feb 3, 2013 | 07:58 PM
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It should still rev without any problems. Have you checked for codes? Sounds like it could be the apps. I would suggest trying an apps reset. If that doesn't work test the apps following the procedure on this link VP44 Diagnostic
 
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Old Feb 4, 2013 | 05:50 PM
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boost fooler or programmer? if not probably getting factory defueling/codes
 
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Old Feb 4, 2013 | 06:45 PM
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It would rev to redline but i think he was thinking it would feel more powerfull than it did. I did reset the apps just to see if it made a difference and it didnt. He is looking for a tuner rite now.
 
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Old Feb 4, 2013 | 06:52 PM
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Ok. I thought it wasn't reving past 2300
 
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Old Feb 4, 2013 | 09:54 PM
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Nope, i saw 3000. Can you guys recommend a programmer? Will a aftermarket lift pump be immediately needed? All i know about the vp44 trucks is they need a good lift pump.
 
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Old Feb 4, 2013 | 10:06 PM
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Need to do the lift pump first. Next would be a set of gauges or a chip with built in gauges. I really like my edge juice. The edge comp is pretty much the same as juice without a monitor and gauges.
 
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Old Feb 4, 2013 | 11:43 PM
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i just put 100hp injectors in my truck and i thought the same thing at first also. i left the chip on 0 and just the injectors alone didnt do much but with the chip its way better
 
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