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Thread: Turbo Vanes Pulsing?

  1. 06-28-2008 #1
    capflya
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    Turbo Vanes Pulsing?

    Posted this on the dieselplace but there havent been any replies.

    It happens at lower speeds (mph) but at almost all RPM.... i can hear the vanes open, shut, open, shut. This only happens when I run a tune other than my stock tune with the DPF shut off. The pulsing happens on the highway with cruise control on at 65mph/~1600rpm but its not as noticeable. I can only tell from the faint whistle I can hear from the turbo. Do I have a tuning problem or is there something weird going on? This never happened before when I ran a tune from what I can remember. This seems to be a new occasion linked with the newest (2.22) version of the tuning suite. All of my tune files are small, the current one I'm having problems with is kind of a 20-20 tune from mcrats tutorial. I've driven it about 60-70 miles and still has the pulsing. If someone wants to look at the tune file I'll email/post it. I'm new at tuning so I could be just missing something. Thanks!


    -David
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  2. 07-04-2008 #2
    Maxed Out
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    Hit me with an email and I will take a look at it. I have tuned a few of them so I might be able to help. [email protected]
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  3. 07-06-2008 #3
    capflya
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    Got it fixed! A few days ago I was playing with it and I has disabled the EGR through HP Tuners and the valve was getting blown open or something was happening and the truck would loose the boost. I enabled it and now have no problems. Thanks for your offer! I've been enjoying driving the truck so I never got to post up that I fixed the prob.
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  4. 08-24-2008 #4
    jpr5690
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    Dam Bud, We Seem To Be On The Same Learning Curve.. Just Figure Out I Did The Same Thing..

    Now I Just Leave The Egr Master On And Raise The Min Temp For Egr Function To 320 So The Computer Keeps The Egr Shut

    When I Used The Dpf And Egr Master Controlls I Had All Sorts Of Issues
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  5. 08-26-2008 #5
    CRASHNBURN
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    You can not just disable it to keep it shut off???? I have disable mine with no problem, but I had the blocker plate in so no big deal. Can you guys help me I am not understanding why you had to turn it on. I have an lbz so that might be the difference.
    2006 LBZ Duramax 4x4 CC SB 2500HD SRW 4x4 LT1 (with extras), Blocked & Fingered, Fumoto drain valve, Keystone Ram Air Good Hood, Banks Ram Air, Access cover & Rhino over the rails, Victory Red.
    33'-0" Dutchman fifthwheel,Tekonsha Voyager Brake Controller

    Banks Sixgun with HPTUNERS.
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  6. 08-26-2008 #6
    jpr5690
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    With The Blocker Plate Its A Different Story..

    The Theory I Have Is That When You Just Shut If Off It Gets Blown Open And Stays Open..

    But If You Just Tell It To Stay In A Closed Position Then The Motor Will Readjust The Egr Valve If The Boost Blows It Open.. Its Basically The Same Thing
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  7. 08-26-2008 #7
    jpr5690
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    In Your Case Who Cares, Nothing Is Getting Past It Anayway.. Its When You Dont Have It Blocked You Can Run Into Trouble By Simply Turning It Off
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  8. 08-26-2008 #8
    daniel99ta
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    I am hearing the vanes open and close on mine too, is this a bad thing, am I actually losing boost? I disabled the master egr but I don't have a block off plate either, am i doing this all wrong?
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  9. 08-28-2008 #9
    jpr5690
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    Honestly I Dont Know, I Just Know When I Disabled The Master Egr I Ran Into Issues So Instead I Set The Dtc's To No Mill And The The Egr Diagnostics Temp Up To 320 For Engage And -50 Disengage With A Cutoff Position Of -5 Deg

    This Way The Computer Makes Sure It Stays Closed And I Get No Codes..

    I Also Removed My Dpf And Just Shut Off The Codes... I Been Running The Truck Like This For A Year Now And It Runs Great
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  10. 08-29-2008 #10
    Syclone2356
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    Forgive me if this is a silly question, I'm new to diesel tuning.

    What is the advantage of disabling the egr?

    Tony
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