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

40lbs of boost

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Old Jan 20, 2011 | 06:29 PM
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TN12valve's Avatar
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Default 40lbs of boost

with my wastgate blocked off i was getting right at 40lbs of boost i ran like this for awhile but it kinda hit me that my headgasket may not last much longer so i took it off. with my fuel pate came a boost elbow i dont think its the kind u can adjust. if i put this on would it push that much boost?
 
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Old Jan 20, 2011 | 06:39 PM
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Whit's Avatar
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no prolly not.................anything over 32 psi is so superheated its killin yer egt's anyway
 
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Old Jan 20, 2011 | 06:50 PM
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x2 set it right around 30-35. above that is just hot air
my egts are alot cooler n more controllable with the dtech at 40psi than my stocker pushin 50.
 
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Old Jan 21, 2011 | 10:15 AM
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yeah stock im getting like 28 max boost so im gunna install the elbow n see how it works for me i would feel much better about having an elbow vs. a clamp! haha
 
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Old Jan 21, 2011 | 10:25 AM
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Originally Posted by cummins95
x2 set it right around 30-35. above that is just hot air
my egts are alot cooler n more controllable with the dtech at 40psi than my stocker pushin 50.
Alot of that has to do with the increased CFM of a larger turbo compared to a stocker. Your pushing more air with the 62 over a stocker all through the range of the turbo
 
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Old Jan 21, 2011 | 02:45 PM
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Yea i would back it down a bit and go with 32-35 like these guys said.
 
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Old Jan 26, 2011 | 08:39 PM
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JUST WONDERING IS IT NORMAL TO RUN 12 POUNDS OF BOOST AT 1800RPM AND AT 60
 
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Old Jan 27, 2011 | 12:06 AM
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Ya that's about right where mine is at 60 also
 
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Old Jan 27, 2011 | 08:59 AM
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Originally Posted by TN12valve
with my wastgate blocked off i was getting right at 40lbs of boost i ran like this for awhile but it kinda hit me that my headgasket may not last much longer so i took it off. with my fuel pate came a boost elbow i dont think its the kind u can adjust. if i put this on would it push that much boost?
You can adjust a non-adjustable boost elbow by drilling it out some. Just go in small steps till you get it 30-35#.
 
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