5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

04 1/2 boost/ turbo question

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Old Jan 12, 2009 | 01:08 AM
  #1  
BigGreenMonster's Avatar
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From: S.C.
Default 04 1/2 boost/ turbo question

i have an o4 1/2 w/ a smarty box i run on 5. max boost i have ever seen is 35 and that is a spike. it will settle back to 30-32 usually. my 24v buds are makeing 40-45 all day. is the cr turbo wastegated and if so how do you fool it? stock turbo btw
 
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Old Jan 12, 2009 | 03:49 PM
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MegaMan's Avatar
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I'm seeing 38 with only intake, exhaust, and Quadzilla Max Mileage. The QMM has a built in boost fooler which I think basically just makes the wastegate hold out longer before it dumps.
 
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Old Jan 12, 2009 | 04:51 PM
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JTProuhet's Avatar
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I have the edge juice with attitude along with intake and just straight pipe, i have seen 38-40 boost psi before, and i have the backdown turned on so if it hits 38 it starts backing it down and it has backed down as much at 45%...
 
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Old Jan 12, 2009 | 05:23 PM
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maybe having a six speed HO has something to do with it
 
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Old Jan 12, 2009 | 05:48 PM
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Sorry, I may have spoken out of turn here, my truck's an 06. I think the stock 06 got a little more boost than the earlier models?
 
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Old Jan 12, 2009 | 10:09 PM
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Dragon Flow Diesel 128's Avatar
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all you need to do is download the SO6 software on your smarty (Mads Electronics - Smarty - CaTCHER - Dodge Tuning - Home) and turn your wastegate off (its an option on your smarty). before i only had 32psi but with it off i get 45psi
 
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Old Jan 15, 2009 | 05:28 PM
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call me nancy but... i do not know about turning the waste gate off! i cannot believe there is not a "tuneable" setting insted of an on/off. my bud suggested using a boost elbow andthem putting a manual valve on it where you could set it say for 42 or so.
 
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