5.9L 24V Performance Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps Related To Performance And Longevity

275 hp/625 torque..truk sucks..disappointed again

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  #11  
Old 01-15-2009, 09:12 AM
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i agree, you may have enough fuel pressure going into the VP, looks like you have little fuel coming out, id say VP is dying
 
  #12  
Old 01-15-2009, 11:30 AM
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also i realized that w/the comp added over the mechanical setup on the dyno it made exactly 40 hp over the mechanical setup.

wish i didnt hafta pull that vp to check flow
 
  #13  
Old 01-15-2009, 03:56 PM
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I know with mine it made 244 on 0 and 403 on 5 so it sounds like your pump is pumped out
 
  #14  
Old 01-15-2009, 05:01 PM
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so the comp only made 40 more horse than the injectors alone?
 
  #15  
Old 01-15-2009, 05:26 PM
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My truck made 316/716 with only a 4" Exhaust and Adrenaline. Stock HX35 and stock injectors. Something is definantly not right. Codes? Hows fuel mileage?




Luke
 
  #16  
Old 01-16-2009, 06:14 AM
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Originally Posted by kazairl
so the comp only made 40 more horse than the injectors alone?

yep...exactly 40 hp. back to back runs.

fuel mileage sucks too.

im gonna git after the tap and the ip after it warms up a little. im needin it right now but i gotta figure out wahy its so friggin poor. im gonna load my backhoe this weekend and haul it a couple hudred miles ..hope it makes it
 
  #17  
Old 01-16-2009, 09:28 AM
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Bad fuel mileage can be a sign of a Ip on its way out. However its hard to tell during the winter because fuel mileage(unless your Dukeyboy j/k) usually drops anyways.

But I think you got the right idea. check the tap then the pump.
 
  #18  
Old 01-16-2009, 10:34 AM
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im saying pump is going bad. hit up one of the vendors on here for a new one
 
  #19  
Old 01-16-2009, 12:39 PM
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hrvp for me if i gotta throw a pump on it...

industrial or bd got a hotrod now too....im gonna hafta drive it for awhile til i can kill it cuz i hate to change a good part out
 
  #20  
Old 01-17-2009, 12:09 AM
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How many miles on your Vp44?
 



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