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

12valve tuning? I need help!

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  #11  
Old 12-16-2011, 11:45 AM
M-Schuler's Avatar
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ok.. so where can i pick em up? or would it have to be an online order somewhere? and what about the afc washer flip? do i just flip it over or do i have to add something to it?
 
  #12  
Old 12-16-2011, 12:11 PM
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bosch pn 2095, should be able to get from pump shop, probly ebay or anywhere online. try lowbudgetdiesel.com I think you can add a washer between diaphram and spring, good for 3mm of travel? then the flip trick gives you more, the idea is to get the afc to allow the fuel rack more travel just like the plug does. Id just gut the thing but to each his own
 
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Old 12-16-2011, 12:19 PM
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just flip it over. google it. the plug is a mack and or a bocsh part # online stores have them. TUNE your damn AFC dont just dick with the star wheel. UNCRIMP your wastegate line. you are making abnormal amounts of drive pressures when the wastegate is unfuntional. get a cheap little elbow and fool the gate not delete it. you will destroy your turbo. 4k springs are the cats a$$ buy them!!!!

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bocsh pn#1 413 462 095 it allows for 21mm of rack travel vrs 19mm from the stock 2000 series plug
 

Last edited by turbo2332; 12-16-2011 at 12:19 PM. Reason: Automerged Doublepost
  #14  
Old 12-16-2011, 12:37 PM
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my highest boost level is 37psi right now.. thats mashed to the floor at 2900rpm.. but ill look into at boost elbow.. i did tune the afc not just the star gear.. but im sellin a stack kit and a down pipe so ill probably get the 4k springs by the end of the year
 
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Old 12-16-2011, 01:45 PM
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37 on a stock charger is out of it efficiency range and you begin to risk damage. play in the low 30's for the sake of your turbo and head gasket. an elbow allows for higher boost numbers and allows the wastegate to function, elieviating lots of unwanted backpressure. and much more than 17ish on timing will seriously jepordize the logevity of your stock HG
 

Last edited by turbo2332; 12-16-2011 at 02:34 PM.
  #16  
Old 12-17-2011, 12:32 PM
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Well im lookin into the boost elbow so only run around 32psi.. Then the 4k gsk for christmas maybe a mack plug too.. There is a 97 12 valve at a junk yard im probably gona pick up and build up with all the goodies

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I got a good exhaust set up on the truck.. What about the banks twin ram set up? Are they worth it?
 

Last edited by M-Schuler; 12-17-2011 at 12:32 PM. Reason: Automerged Doublepost
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