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    Thread: Apexi AVC-R Throttle Position Signal

    1. Member
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      Jetta MK4 VR5 Turbo
      06-04-2015 12:01 PM #1
      hey guys, i got a question about the avc-r boost controler.

      does it need the throttle body position signal? and if yes, for what exactly?

      i am asking because if i connect it to the throttle, i always have some kind of oscilating boost and vibration.
      when i turn it off in the apexi menu, the vibrations are gone.

      thx
      chris

    2. Member 24vGTiVR6's Avatar
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      06-04-2015 09:27 PM #2
      Quote Originally Posted by napkin View Post
      hey guys, i got a question about the avc-r boost controler.

      does it need the throttle body position signal? and if yes, for what exactly?

      i am asking because if i connect it to the throttle, i always have some kind of oscilating boost and vibration.
      when i turn it off in the apexi menu, the vibrations are gone.

      thx
      chris
      I don't use the throttle signal, just speed and RPM. works great.

    3. Member
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      06-19-2015 11:51 AM #3
      Quote Originally Posted by 24vGTiVR6 View Post
      I don't use the throttle signal, just speed and RPM. works great.
      do you think it will work without speed signal, too? just rpms.

      i trying to locate the problem. in lower gears i have more oscillation than in higher gears. so i think it has to be something with the speed signal.
      i disconnected the speed signal, and got a nearly 1sec oscilation. i could totaly see it on the apexis boost graph.

      does anybody know whats the max voltage that can go into the speed signal IN on the apexi?
      if i connect a straight 12v signal i get no oscillating boost

      i dont know what to do

    4. Member 24vGTiVR6's Avatar
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      06-27-2015 05:18 PM #4
      Well you don't need throttle / speed / RPM if you are using it as just a boost controller.

      You need speed & RPM for the controller to calculate what gear it's in for gear based boost control.

      Id try disconnecting all sensor inputs, run it in OFF mode (wg spring pressure) - if your max boost at that point is your wg spring setting then move on to setting A and increase duty cycles until you achieve stable high end target boost. (be careful and adjust duty only a few % at a time)

      Then once you achieve stable boost- reconnect your speed and RPM, and fool with the gear based stuff if you want.


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      Last edited by 24vGTiVR6; 07-26-2015 at 10:13 AM.

    5. Member turbo mike's Avatar
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      07-11-2015 01:20 PM #5
      can we get some pics of the screens as to how people are setting these up? i know mine was setup different then other peoples, etc, and they all achieved similar results. id just like to see what works and how theyve been setup on another unit for comparison.
      Mike
      supercharged glx - 12.0 @ 113mph (12psi Vortech V1)
      turbocharged glx - 12.7 @ 108mph (7psi Borg Warner S362 .88 a/r)

    6. Member 24vGTiVR6's Avatar
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      07-19-2015 10:26 AM #6
      Duty % / target boost



      % of total boost target per gear





      General setup (TB signal not used)



      02M gear points





      the rest (ne-points, FB etc) will all be different per driver. I kept NE pretty much default, I just adjusted it to go to 7000 (I think it was set to 6500 by default). FB is off except 5th gear, where I encountered a little bit of boost fluctuation at WOT.

      Learn gear is always off.

      This is how I set it up (tried a few different ways, this is the best for me):

      - Turn all auto functions off (learn gear, FB speed)
      - Set MAX target boost level overall (not per gear, set the max boost you want to run) and raise duty to something small - say 10%.
      - go for a drive and pull full WOT in 4th and see where the boost gets to. The AVC-R has a built in monitor that you can change to graph mode - this is what I used after each pull to see if a) max boost target was reached, and b) if there were any spikes or fluctuations. I also used the logs that my AEM fail safe gauge keeps to make sure target boost was being achieved per gear, and also that AFR's were good
      - if you do not achieve target boost at full WOT in 4th, then add more duty % until you do. Be careful and only add a few % at a time. If you add 10% or something right off the bat you may over boost and engine damage may result. Just make small increases until the target boost is achieved in 4th @ WOT.
      - once max target boost is achieved, set the gears. Go to the gear judge screen and select 1st gear (highlight 1st and press next). Accelerate to 3000 RPM and hold, then press next to set that gear. Continue until all gears are set.
      - at this point I adjusted my NE points to reach 7000 RPM so the EBC can control boost all the way to red line.
      - now the real fun part - set the boost by gear. We do this in the start duty menu. Since I set max boost on the EBC's duty / boost screen I gave the early gears a negative value to turn the boost down (for traction). As the gears go up, so does the boost, eventually to max boost levels in 4/5/6. Experiment with this and tune it out to where u want it to be - I'm still "tuning" this setting at the moment.
      - last is FB speed setting. If your boost fluctuates try adding 1 or 2 FB to that gear. I only had a fluctuation in 5th gear and I added 3 FB there- smoothed it right out.

      Hope that helps.

      Amazing EBC 🏻


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      Last edited by 24vGTiVR6; 07-26-2015 at 10:14 AM.

    7. Member turbo mike's Avatar
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      07-20-2015 08:45 PM #7
      What size waste gate spring is in your car now?

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      Mike
      supercharged glx - 12.0 @ 113mph (12psi Vortech V1)
      turbocharged glx - 12.7 @ 108mph (7psi Borg Warner S362 .88 a/r)

    8. Member 24vGTiVR6's Avatar
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      07-21-2015 05:37 AM #8
      T4 divided - both gates have ~10psi springs. Target max boost is ~24psi


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    9. Member turbo mike's Avatar
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      07-22-2015 09:18 AM #9
      awesome. i need to look into mine. i had a 5psi spring in there and had issues with the controller making anything over 8psi in 4th, but 3rd went to 16 no problem. will match your setup to mine and see if theres any differences.
      Mike
      supercharged glx - 12.0 @ 113mph (12psi Vortech V1)
      turbocharged glx - 12.7 @ 108mph (7psi Borg Warner S362 .88 a/r)

    10. Member
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      07-23-2015 05:39 AM #10
      problem is. it wont help going wiht his postet settings, because the setup depends on so much factors.

      turbo size, turbo A/R, turbo exhaust side, wastegate, wastegate spring, exhaust, manifold, intercooler, piping, etc. etc. the list endless
      Last edited by napkin; 07-23-2015 at 05:42 AM.

    11. Member turbo mike's Avatar
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      07-23-2015 05:38 PM #11
      Oh I agree, and I'm well aware. I just want something that works to compare to. Nothing more

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      Mike
      supercharged glx - 12.0 @ 113mph (12psi Vortech V1)
      turbocharged glx - 12.7 @ 108mph (7psi Borg Warner S362 .88 a/r)

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