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Thread: VEMS v3.3 tuning. Any others on this setup?

  1. #1
    Join Date
    Jan 2011
    Location
    Reno
    Posts
    1,091
    My Cars
    E46M3, S52T E30, E21T

    VEMS v3.3 tuning. Any others on this setup?

    Just installed a VEMS v3.3 PNP onto my e34 Touring with M50tu/manual. Updated some firmware, a config file and she fired right up. Right now, the engine is 100% stock 160k mile setup. Clean, no leaks, no issues car.

    I am going to be adding an Eaton M122 supercharger from Hyde Motor Works. He's got a thread here somewhere. Anyway, I wanted to shake down the standalone and engine as it sits right now so I can limit the amount of 'new additions' that may confuse future diagnostics.

    As of my first test drive, I've got a great running system. I may need to decrease some timing due to the low grade (91 octane) fuel and extreme temps here in Vegas (saw 113* ambient today). I did hear some low level detonation but nothing more than the chipped 413 I was running before. That said - I now have full tuneability - so I'd like to get things ironed out.

    Anyone here have vems tuning experience? Here is my ignition and fuel tables after a little tinkering. LMK what you think. I was hoping GSTuning, HSV, or 5nail5 would check in here for a chat.





    I am having trouble with idle when the A/C is switched on. The car will die pretty much immediately. Does anyone know the proper settings here in the A/C idle control to compensate for the additional load?


    Which begs my next question. The Eaton will increase a pretty good amount of load itself,even at idle. How would I go about making the changes needed to compensate for it (when install day comes)?
    Last edited by dangerwillrbnsn; 08-20-2018 at 07:51 PM.
    CURRENT:
    Racecar: '81 e21 320i Group2. GT28 @ 25psi, MS2, e28 M5 suspension/brakes underneath, forged, cammed, 400bhp, 2190lbs, etc, etc...
    Daily: '95 e34 540/6. DUDMD tuned, vogtland/koni, Schnitzers, other minor touches.
    Project: '94 525iT. S50 swapped, supercharger in the works, manual swapped, Airlift supsension, Mpars, Brembo's, clean machine.
    New daily: e60 530i sport package. Stock.

  2. #2
    Join Date
    Mar 2008
    Location
    West Covina, CA
    Posts
    939
    My Cars
    97 M3/4/5, 98 M3/2/5
    Might want to cross post this into the FI section as there are more guys running standalones there and is more frequented.

  3. #3
    Join Date
    Apr 2013
    Location
    dfw Texas
    Posts
    257
    My Cars
    e36m3/4/5, e46330i
    I think NotoriousVR runs/tunes VEMS also.

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