5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

What do you think?

Old Mar 7, 2011 | 08:18 PM
  #1  
MechanicalDiesel's Avatar
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Default What do you think?

With my current mods even the 60lb valve springs and 4gsk (when i put them on), do you think my truck could handle it if i added a #100 fuel plate and a boost elbow im getting a max of only 20 psi right now. I just dont wanna destroy my stock tc yet
Plus another quick question why am i only getting 10mpg lately, do you think its cause i got the smoke screw (not star wheel although thats all the way forward too) turned in all the way, it didnt make a difference so should I turn it out and how much? I think i got it all the way in now
 
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Old Mar 7, 2011 | 09:30 PM
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I dont think it would ... my truck made the torque converter slip like crazy with a 100 plate full forward, and i saw about 40 psi with the stock turbo.
 
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Old Mar 7, 2011 | 09:53 PM
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you've got other issues, causing bad mpg
 
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Old Mar 7, 2011 | 11:27 PM
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boost leaks
 
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Old Mar 8, 2011 | 08:16 PM
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X 2 boost leaks. Kiss stock tc good bye
 
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Old Mar 8, 2011 | 08:32 PM
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How should I look for boost leaks? Is there any common places? and ya ill be getting a new TC soon, got any good brands to consider?

and i thought 20 psi is the stock boost? if it was leaking wouldnt it be lower?
 

Last edited by MechanicalDiesel; Mar 8, 2011 at 08:42 PM.
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