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  1. #26
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Doesn't recirculating versus venting require some type of tuning adjustment?
    No; on a MAF equipped car the car's ECU is expecting the air to be re-circulated to the intake tract and when venting on these vehicles the car will sometimes stall or experience some issues due to the un-metered air being lost. But on any MAP car or s65 in our case venting a BOV to the atmosphere versus recirculating causes no issues. Some people may find the driveability a little different between the too but tuning wise there should be no issues...

  2. #27
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    Click here to enlarge Originally Posted by s65e90 Click here to enlarge
    No; on a MAF equipped car the car's ECU is expecting the air to be re-circulated to the intake tract and when venting on these vehicles the car will sometimes stall or experience some issues due to the un-metered air being lost. But on any MAP car or s65 in our case venting a BOV to the atmosphere versus recirculating causes no issues. Some people may find the driveability a little different between the too but tuning wise there should be no issues...
    I was going to say the S65 doesn't have a MAF but yes that makes sense it shouldn't matter on the S65. Still, I wonder if there is something we are missing in a kit set up for a venting or recirculating setup as on paper there should be no issue.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

  3. #28
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    1 out of 1 members liked this post. Yes Reputation No
    will edit to make sense lol:

  4. #29
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    Assuming that that there's no additional difference in the hardware when running a BOV vs. Recirc setup, I'm just gonna guess it's A) installed wrong, B) TiAL BOV has the wrong spring for this setup or C) it's just not getting enough vacuum pressure above 5.5k RPMs
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

  5. #30
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    any updates?

  6. #31
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    1 out of 1 members liked this post. Yes Reputation No
    Updates:

    Been going back and forth with Tial tech guy. I yanked it and made sure, it is in fact running the proper spring (green) This is what he said to me:

    From him:
    I can hear what is happening now. I guess I wasn't fully paying attention when watching the video the first time. At the higher RPMs you are not hearing the BOV release because at this RPM rate, the BOV is wide open and not making the "whoosh" noise you are use to under lower RPM's. If the BOV was not opening all the way, you would be getting a lot of noticeable compressor surge.


    Everything appears to be operating right.



    Let me know if this answers your question.


    Regards,

    Ian
    TiAL Sport



    My reply:
    Shouldn't it go into full vacuum when I let off throttle? The car doesn't feel like its engine braking until around 5500 when the valve fully opens.



    His reply:
    I see what you are saying here. The Vacuum is not shooting to -20 instantly as it should. The BOV appears to operating as it should, blowing off the energy from the Supercharger as you let off the throttle. If the BOV was not opening, you would be getting very noticeable surge at this point. Once the throttle plate is closed, you should see instant vacuum. The boost/vacuum gauge should be installed on the intake plenum side of the throttle plate, which the BOV's performance would still not be affecting your vacuum reading.



    My reply:
    Yea, there isn't any audible surge, just feels like it isn't engine breaking like it did on the vortech BOV prior. So, you're saying this is how it is intended to work and its working fine?


    His reply:
    Without actually getting some type of video footage of the blow-off valve operating, it is a little difficult to say for sure, but I would say that from what I can hear in the video clip, the BOV appears to be operating properly. Your vacuum not dropping instantly on the drop of your throttle is another issue that I doubt the BOV is causing.





    I put the vortech back on for the time being.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  7. #32
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    Yes, my reply to you early (edited for clarification) was that the valve is actually working fine. Remember this valve is much more audible that the vortech unit. Also unlike a turbocharger, the SC is belt driven and at high RPM that compressor is keeping the valve open until the revs drop. Being that it's also a louder valve, you are hearing it much more pronounced. But this is why it seems to be hanging up or staying open for a bit as the compressor bleeds off any excessive boost. The car is not dropping into vacuum right away. It needs to vent unitl the revs drop ..



    Hope this makes a little more sense.

  8. #33
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    Click here to enlarge Originally Posted by s65e90 Click here to enlarge
    Yes, my reply to you early (edited for clarification) was that the valve is actually working fine. Remember this valve is much more audible that the vortech unit. Also unlike a turbocharger, the SC is belt driven and at high RPM that compressor is keeping the valve open until the revs drop. Being that it's also a louder valve, you are hearing it much more pronounced. But this is why it seems to be hanging up or staying open for a bit as the compressor bleeds off any excessive boost. The car is not dropping into vacuum right away. It needs to vent unitl the revs drop ..



    Hope this makes a little more sense.
    Yea it does, but it just doesn't feel right, if that makes sense lol. The engine braking just isn't there above 5500rpm.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  9. #34
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    Maybe it's the tune you are pushing it past it's original level.

  10. #35
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    Click here to enlarge Originally Posted by Ging Click here to enlarge
    Maybe it's the tune you are pushing it past it's original level.
    Tune is more then fine. DME is adaptive and has handled every change nice and safely.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  11. #36
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    I'm thinking more as TQ calculations maps and with electric throttles is the DME actually closing the blades. Have you done live data to see if you are getting throttle close before 5500 rpm.

  12. #37
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    Click here to enlarge Originally Posted by Ging Click here to enlarge
    I'm thinking more as TQ calculations maps and with electric throttles is the DME actually closing the blades. Have you done live data to see if you are getting throttle close before 5500 rpm.
    Nothing has changed tune wise or power wise since i installed the Tial. Everything ran fine with the vortech unit, so a change in a bypass/BOV wouldn't cause any major changes in the operation of the vehicle outside of possible vacuum issues.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  13. #38
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    Oh thought this was happening with the other bov too.

  14. #39
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    Click here to enlarge Originally Posted by Ging Click here to enlarge
    Oh thought this was happening with the other bov too.
    Negative, which is why im so damn confused. Tial says it's working as intended, but it doesn't seem right.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  15. #40
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    swap kits, less headaches

  16. #41
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    Click here to enlarge Originally Posted by BlownE92M3 Click here to enlarge
    Negative, which is why im so damn confused. Tial says it's working as intended, but it doesn't seem right.
    I don't really know what to say either. As long as the car is running right though?

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

  17. #42
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    The only thing that sounds logical to me is that like Kidrobot said the vacuumhose collapses at high rpm due to more vacuum power.
    Is the vacuum hose connection to the Tial in another angle than on the original BOV?
    Maybe the hose succeeds in collapsing, or kinks, on a bend and as the vacuum force lessens (at 5500 rpm apparently) the hose opens again.
    There are two theories to arguing with women. Neither one works

  18. #43
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    any updates @BlownE92M3 ?

  19. #44
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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    any updates @BlownE92M3 ?

    Took it off. Not worth the headache lol
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  20. #45
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    Click here to enlarge Originally Posted by BlownE92M3 Click here to enlarge
    Took it off. Not worth the headache lol
    lol.. the kit or the BOV?

    I saw a new dyno vid.. thats why I ask Click here to enlarge

  21. #46
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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    lol.. the kit or the BOV?

    I saw a new dyno vid.. thats why I ask Click here to enlarge
    Bov. Dyno vid was just for kicks. We had a local guy pass a couple weeks ago and we all met up in his honor for a dyno day. Number SUCKED due to faulty IC pump and IAT's being high as balls.
    -08 E92 Brushed Steel DCT 613hp-
    -ESS/AR 700 - KW V3's - AR Design - Volk TE37 - Vorsteiner - Challenge-
    -2012 Brushed Red Aluminum GTR-
    - Jacks 3.8 w/ Jacks heads - Jacks Drag 800 w/ billet gears - AAM GT-900R - Swift - ADV.1 - Ecutek via Visconti -
    - 1060hp 852tq 32psi - 9.34 @150mph 7688ft DA - 185.5mph 1/2 mile 9240ft DA -
    http://www.jackstransmissions.com/
    http://store.vtune.us/
    http://www.revvolution.com/

  22. #47
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    Click here to enlarge Originally Posted by BlownE92M3 Click here to enlarge
    Bov. Dyno vid was just for kicks. We had a local guy pass a couple weeks ago and we all met up in his honor for a dyno day. Number SUCKED due to faulty IC pump and IAT's being high as balls.
    sorry to hear that.

    Your not alone in your search for better IC capabilities. there are solutions btw

  23. #48
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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    Your not alone in your search for better IC capabilities. there are solutions btw
    Just gotta go Air/Air Click here to enlarge
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

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