12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

max boost 27ish?

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  #1  
Old 07-07-2009, 03:41 PM
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Default max boost 27ish?

i put on my boost elbow an i turned th screw all th way down and i cant even get to 30 psi. whys that? boost leak?
 
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Old 07-07-2009, 04:40 PM
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Boost is directly related to fuel more fuel=more boost if it stops at 27 or 30 then you're only providing enough fuel for 27 to 30 psi
 
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Old 07-07-2009, 04:46 PM
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ok good just makin sur nothin is wrong. so im not givin it to much fuel at all huh?
 
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Old 07-07-2009, 04:55 PM
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Assuming that you're not putting much fuel to it no 27 to 30 psi is a good range to stick in I think I can push my 35/40 way past that but it doesn't help
 
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Old 07-07-2009, 05:09 PM
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just have a lil 12 plate slid all the way and pensacola stage two injectors and the star wheel
 
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Old 07-07-2009, 05:26 PM
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my truck when i first started getting into it had just a plate forward, star wheel and boost elbow and it would peg out at about 38 and you have injectors so i would think you should push more or close to as much boost as i did. maybe its the 12 plate. im not sure what mine was but i think a 4 or 5.
 
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Old 07-07-2009, 05:54 PM
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A 12 isn't much more then stock and the injectors only put out as much fuel as they're given so if they don't get much they can't spray much
 
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Old 07-07-2009, 06:02 PM
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yeah im thinkin of gringing it a lil
 
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Old 07-07-2009, 08:21 PM
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Just run with no plate you'll get plenty of fuel
 
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Old 07-07-2009, 10:02 PM
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if you turned the screw in all the way your turning down the boost.
leave it out for maximum. or just plugg the wastegate
 


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