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Turbo Plus questions. 700 1991

posted by  CW on  Mon Oct 25 14:32 CST 2004
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last visit: Tue Feb 5 13:37 CST 2008
[RELATED]

Hi everyone,

I've got a turbo plus kit out of a '87ish 745T that I'm probably going to install in my '91 745T tomorrow. My Vo mechanic has a '90 745T at his shop with Turbo + installed that I can use for installation comparison. Something I was wondering about: Say my wastegate rod is set to allow my turbo to boost to 9 or 10 psi instead of the stock 8 psi, when I install Turbo + would this mean that it would allow my turbo to boost higher then 12 psi because the wastegate rod is not at factory spec? I want to install Turbo + in my Vo for the extra oooph it can provide at high RPM, but I don't want to push my 290K km (~181K mi) TD04 too hard. I'm not worried about the engine as it has had only 30K km since its rebuild and is in good tune. Will my boost stay basically the same as it is now under ~3500 RPM and/or not at full throttle? I was hoping that it would act normally unless I demanded more by flooring the accelerator. Thanks in advance for any responses!
--
Chris. Halifax N.S. '91 745Ti, 290K km and '91 745 NA, 382K km.








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    Turbo Plus questions. 700 1991

    posted by  zrubin on  Tue Oct 26 11:07 CST 2004
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    last visit: Thu Sep 20 15:45 CST 2012
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    Turbo+ only works at full throttle (will not allow higher than "normal" boost except at full throttle) and the boost increase does kick in around 3500 RPM, so yes the boost will be "normal" at lower engine speeds (regardless of whether you're at full throttle). I'll have to look in my Turbo+ manual to answer the other question or maybe someone else knows.

    Zack
    1980 245DL M46 274k
    1988 745T+ M46 197k








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      Turbo Plus questions. 700 1991

      posted by  CW on  Tue Oct 26 13:05 CST 2004
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Feb 5 13:37 CST 2008
      [RELATED]

      Hi Zack,

      Thanks for the response. That's how I thought it worked, but I wasn't sure. As for my overboosting question, my mechanic and I discussed it for an minute today and we concluded that if the Turbo + unit is programed to release pressure at 12 psi then it would not exceed this pressure no matter what the wastegate rod is set at. Makes sense to me. Anyone else?
      --
      Chris. Halifax N.S. '91 745Ti, 290K km and '91 745 NA, 382K km.







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