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Thread: Loss Of Power - Cummins 6.7L

  1. Top Of Page | #1
    Powerline720's Avatar

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    Loss Of Power - Cummins 6.7L

    Loss in power.

    Ok, so I'm at a loss.

    I don't know what to check from here.

    I have lost boost, from 62-35 psi.

    When I load a new tune on the truck, it runs well with great power and a 62 psi boost.

    I turn the truck off and drive again, and the truck feels as though it is going into some form of limp mode.

    Low boost, bad throttle response. No check engine light!

    It seems to be defueling. I still have the correct rail pressure.

    The truck feels stock which sucks when you have compounds!

    20210211_051647.jpg

    Sent from my SM-G975U using Tapatalk


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  3. Top Of Page | #2
    More Powa! RATLIN'HP's Avatar

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    Re: Loss Of Power - Cummins 6.7L

    Sounds like a stuck open wastegate or bad turbo.

    Sent from my SM-A505U using Tapatalk

    2015 Black Laramie CCSB 3500 SRW. Thuren Leveled With Fox 2.0 Shocks. Ride Rite Rear Air Bags With Wireless Airlift Onboard Air. 35" Toyos. All The Options Minus The Soot Cookers. RaceMe Ultra.

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  5. Top Of Page | #3
    #1 VENDOR cumminsdieselfreak's Avatar

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    Re: Loss Of Power - Cummins 6.7L

    Quote Originally Posted by Powerline720 View Post
    Loss in power.

    Ok, so I'm at a loss.

    I don't know what to check from here.

    I have lost boost, from 62-35 psi.

    When I load a new tune on the truck, it runs well with great power and a 62 psi boost.

    I turn the truck off and drive again, and the truck feels as though it is going into some form of limp mode.

    Low boost, bad throttle response. No check engine light!

    It seems to be defueling. I still have the correct rail pressure.

    The truck feels stock which sucks when you have compounds!

    20210211_051647.jpg

    Sent from my SM-G975U using Tapatalk
    Details on the build would greatly help.

    2018 Ram 2500 4x4 G56
    Romans 10:13

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  7. Top Of Page | #4
    Powerline720's Avatar

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    Re: Loss Of Power - Cummins 6.7L

    Quote Originally Posted by cumminsdieselfreak View Post
    Details on the build would greatly help.
    ATS Vortex 6000 plus compound kit, full delete.

    EZ LYNX with CTT tunes. 10 bar map, 410 gears.

    Randy's Transmission stage 3 extreme 68RFE.

    ARP625 head studs, afe turbo manifold, intake horn and IC piping. Airdog 4g165gpm.

    Sent from my SM-G975U using Tapatalk


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