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  1. #1
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
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    98366
    My Garage
    B8.5%20S4%20black%20pearl
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    IL

    B8.5 IE stage 1 BPV issue: I've searched, found little to help..

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    seems like my bypass valve is opening and bleeding boost lately. supercharger whine and power were more rabid than what it is now, when I first tuned it. Seems more docile and leaves you wanting more then higher in the RPMs you go. I contacted IE, sent them a log and am waiting to hear back. log says at full throttle and boost, BPV is at 0 degrees. ECU says expected boost is 1.8 bar, actual is 1.6. that sounds a little strong for a bench flash, but this isn't my forte. I'm a B5 guy, mostly. thoughts?

  2. #2
    Senior Member Three Rings Rodizzle's Avatar
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    Jun 17 2015
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    337928
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    Bayarea

    B8.5 IE stage 1 BPV issue: I've searched, found little to help..

    Logs ?
    It could be anything . Fuel , temps , plugs etc

    Sent from my iPhone using Tapatalk
    2014 S4 IE E40 Stage 2+ & TCU 11.32@119.98

  3. #3
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
    AZ Member #
    98366
    My Garage
    B8.5%20S4%20black%20pearl
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    IL

    the log I have is in an excel file and is almost impossible to post on here. or at least I don't know how to do it. even a screen shot is difficult to decipher. Im not being much help, I know

  4. #4
    Senior Member Three Rings Rodizzle's Avatar
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    Jun 17 2015
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    Quote Originally Posted by das4 View Post
    the log I have is in an excel file and is almost impossible to post on here. or at least I don't know how to do it. even a screen shot is difficult to decipher. Im not being much help, I know
    Logs will give us an idea , post uploaded to google sheets or datazap


    Sent from my iPhone using Tapatalk
    2014 S4 IE E40 Stage 2+ & TCU 11.32@119.98

  5. #5
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
    AZ Member #
    98366
    My Garage
    B8.5%20S4%20black%20pearl
    Location
    IL

    working on loading google sheets now. the ONLY changes I made: added the APR open air CF intake and the lower belly pans are off as I serviced the DSG and have to install 034 trans mount/insert. I didn't reinstall the lower belly pan. I know that aids in cooling, but it wouldn't throw the ECU THAT far off, right?

  6. #6
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
    AZ Member #
    98366
    My Garage
    B8.5%20S4%20black%20pearl
    Location
    IL


  7. #7
    Senior Member Three Rings Rodizzle's Avatar
    Join Date
    Jun 17 2015
    AZ Member #
    337928
    Location
    Bayarea

    B8.5 IE stage 1 BPV issue: I've searched, found little to help..

    Seems like your having a tuning issues more then anything . A/F mix , temps , seem correct . Normal timing being pulled most on cyl 5 (acceptable). The only thing I could see is low low timing (power cut ) between shifts at time stamp 05:23:042and gets carried to the next gear . I know there was another member on here having or had similar issue .
    The IE team is out on the road testing in California , Iím sure they get to you shortly and help u solve that bug . I my self is waiting for them to get back so I could sent back data . Hang in there


    Edit : you said you added a intake ? By any chance did u reconnect the breather hose ? Just a while shot
    2014 S4 IE E40 Stage 2+ & TCU 11.32@119.98

  8. #8
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
    AZ Member #
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    B8.5%20S4%20black%20pearl
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    the one just ahead of the throttle body? yeah. the apr open air uses the stock pipe, thatís original and connected

    - - - Updated - - -

    thanks for taking a look at it. IE has been awesome, iím sure theyíll help out with it

  9. #9
    Senior Member Three Rings Rodizzle's Avatar
    Join Date
    Jun 17 2015
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    Anytime


    Sent from my iPhone using Tapatalk
    2014 S4 IE E40 Stage 2+ & TCU 11.32@119.98

  10. #10
    Stage 2 Banner Advertiser Two Rings John@IE's Avatar
    Join Date
    May 18 2018
    AZ Member #
    419038
    Location
    Salt Lake City, UT

    I'll get our engineers to look into this for ya!
    John Tetzlaff
    Live Fast, Buy Fun
    www.performancebyie.com
    Phone: 801-484-2021
    Email: john@performancebyie.com

  11. #11
    Veteran Member Four Rings
    Join Date
    Aug 09 2012
    AZ Member #
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    My Garage
    B8.5%20S4%20black%20pearl
    Location
    IL

    Quote Originally Posted by John@IE View Post
    I'll get our engineers to look into this for ya!
    your guys checked it out, tune is all good!

    still have a stifled supercharger whine/lack of that rabid stage 1 boost. short of unplugging the BPV, the supercharger is subdued. BPV was already swapped, I have no clue what's going on with this thing



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