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Low Boost After Boost Elbow Install

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Just trying to track down the issue efficiently, if anybody has a good/better/best place to start. Did a boost leak test last week, found a few leaks, tightened some clamps, leaks gone. Threaded in a new boost elbow. Before, with leaks, I was seeing about 18-19psi max. Now I can’t get to 10psi. Set screw is turned all the way in. Bleed orifice does seem to be constantly bleeding air,  but I’m not sure if that’s by design or not. It’s the adjustable boost elbow from DAP.

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  • Tractorman
    Tractorman

    This is how @Mopar1973Mankeeps his final drive ratio low.  He turns his 245/75R16 tires into 245/70R16 tires by letting the smoke out.   - John

  • IBMobile
    IBMobile

    Try this, remove the hose from the wastegate actuator, block off the hose, and take the truck out and do a few hard launches.  You should see 28-30PSI.  If still low boost, then waste gate problem, if

  • IBMobile
    IBMobile

    With all that "coke" deposit at the waste gate opening, don't know how good of a seal it had. 

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  • Owner
10 hours ago, Silverwolf2691 said:

 

:think: uh mike, i think thats the wrong color..

Ummm when the smoke is boiling out of the tires yup. It is the right color. Typically has that burning tire smell.

2 hours ago, Mopar1973Man said:

Ummm when the smoke is boiling out of the tires yup. It is the right color. Typically has that burning tire smell.

 

This is how @Mopar1973Mankeeps his final drive ratio low.  He turns his 245/75R16 tires into 245/70R16 tires by letting the smoke out.

 

- John

    • Haha 4
    • 2 weeks later...
    • Author

    Quick update, I’ve got the boost back to normal, but still not sure what numbers I’m getting, and here is why. After driving myself crazy trying to figure out why I’m still only showing 10psi on my gauge I tested the boost bolt one last time with soapy water and when I wiggled it around it started making bubbles right where the nylon hose goes into the compression fitting. Not sure where to find a replacement fitting, but might just go with a different set up than the boost bolt. Not done yet, but thanks to everyone that helped me troubleshoot this.

    • Owner

    Drop that boost bolt in the trash...

     

    Boost plug just forward of the MAP sensor its a 3/4" pipe plug just bush it down from 3/4 to 1/2 inch then get a bass bushing for 1/2" to 1/8" come out with a PTC fitting for your tubing.

     

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    • Thanks 1
    1 minute ago, Royal Squire said:

    drill and tap your intake. 

     

    That's what I did.:thumb1:

     

    - John

    Edited by Tractorman

    • Like 1
    • Owner
    12 hours ago, Royal Squire said:

    Even easier, drill and tap your intake. 

    Why? It is already tapped in a 3/4 hole in the manifold. But hey I did that on 2006 being that plug was not present for CR heads. 

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