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Thread: EVAP and purge delete question

  1. #1
    Join Date
    May 2013
    Location
    Las Vegas, NV
    Posts
    134
    My Cars
    UFO

    EVAP and purge delete question

    I'm almost there with the turbo build.

    I had a few questions though in relation to the EVAP and purge valve on an OBD2 system.

    From what I have read is I can vent the EVAP valve to atmosphere (the one next to VANOS solenoid). What do I do with the purge valve and connection near the OEM location of the MAF? I plan on deleting all of this with a tune. I am curious what you all do with the hard blue line running into the engine bay. Also, when the car was bone stock I was getting strong fuel smells in the garage with a full tank. Bad charcoal canister?

    Looking for this information since I have the m50 manifold out. I have 2 taps. One 1/8" for failsafe and truboost, another for the BOV. How are you guys sourcing vacuum for the FPR? I'm contemplating JB welding the original FPR spot on the M50 mani for a more robust barbed fitting. I see some guys on here running 4 taps into the manifold and just curious why. Truboost calls for a T'eed connection from compressor housing, and that's what I'll be doing.

    Here is the blue line I am referencing.



    I think the valve on the left can VTA correct me if I'm wrong. What about the valve on the right?


    Almost there boys. Can't wait to drive this car.
    Last edited by VLT; 01-06-2019 at 12:35 AM.
    CURRENT: LimeRockParkEdition E92 M3 - BSM/Silverstone E70 X5M - AW/Dove E36 M3
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  2. #2
    Join Date
    Mar 2012
    Location
    Renton, Wa
    Posts
    5,163
    My Cars
    98 m3
    You would need to ask your tuner what he will tune out for you.

    Generally we delete all of these so you can just remove them.

    The blue line you can vent to atmosphere or tie into your intake tube pre turbo.

    The little oem barb on the bottom generally works but I usually plug it and add another “robust” barb in a more accessible location.


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    1989 535i - sold
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    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

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