Torque control during shifts?

Discussion in 'Engine & Performance Modifications' started by TNCHARGER, Jul 16, 2011.

  1. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    I installed the Tranzformer yesterday and realy like the hard "old school" shifts......but it has inhanced something I have noticed before.....feels like the TCM/PCM is pulling power during shifts....nothing major but it is there....I dont remember this with the 2006 I had...I have read some mention of this and seems to be common in RTs but not so common in SRTs..

    What is the fix for this?....MTCM?
     
  2. NetNathan

    NetNathan Not the Momma

    Messages:
    1,790
    Likes Received:
    0
    Joined:
    Nov 9, 2007
    Location:
    Corona, CA
    I am VERY happy with my TranZformer. Everyone should get one. A few nice features make it worth every cent.
    I don't seem to notice the drop in power on shifts. What makes you think this is happening. Do you feel it in every gear?


    Sent from NS1Droid using Tapatalk Pro.
     
  3. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    The PCM times and commands the shifts. It's going to cut power during the shift and do some torque management. The TranZformer changes line pressure whatever at the TCM/transmission. I suppose the shifts are happening faster (duration) and the TCM is still operating as if it was the stock amount of time? You think that could be it? If that's the case I would expect the same with the MTCM?
     
  4. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    No, I didnt mean that the Tranzformer caused this...it was happening before but a little more pronounced with the quicker shifts.

    I was reading on the LXF that some cured this problem with the MTCM.
     
  5. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    I would expect it to all be in the tune/pcm. You haven't had it tuned yet? :D
     
  6. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    just the Diablo 93 octane tune...
     
  7. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    Is it enough to where you might see it in a log? I think the RPM line should look pretty straight. Maybe a bunch of knock retard in the bottom part of each gear (after shift or lower rpms)?

    [​IMG]
     
  8. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    I guess I need to do a data log....havent had a chance to read the Diablo manual on how to do that though....
     
  9. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    It's been so long since I used the predator logging... Should be a how-to somewhere. It's not all that difficult but the wording on the instructions wasn't so clear as I remember. and it's kind of tedious to select parameters but once you select them they stay there until you change it. The predator only saves the last log taken. When you log again it overwrites the last one. I used to take my laptop with me to upload them as I took them if I was going to be checking on more than one log's worth of stuff. Should try to keep the number of parameters down to 8 or less or the sample rate can get too slow.

    I vaguely recollect you're probably going to want (names probably aren't right)
    spark cyl #1
    stknk
    ltknk
    rpm
    Pedal position (might be about 3 of those. think you want "D")
    or throttle position... something to tell when you have your foot on the floor.
    speed (maybe? Can't remember if it can log Current Gear)


    Looking for a power drop within a gear you probably don't care about any of the temps. Something like that.
     
  10. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    Thanks Dave....the manual is very vague on everything....will try and get a log this week and see whats happening...
     
  11. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    With the cam install and dyno tuning the issue is gone....shifts hard with no hesitation...:eek:k:
     
  12. Dookie

    Dookie Foe twenny sics

    Messages:
    2,884
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    Baton Rouge, Louisiana
    Great news Larry, glad to hear it's running well. Probably good ole TM rearing it's ugly head. A good tuner can get rid of it.
     
  13. Jamesmost

    Jamesmost New Member

    Messages:
    2
    Likes Received:
    0
    Joined:
    Dec 4, 2011
    So is the TranZformer still available?
    How is it compared to the silver box?
    Do u need blue tops if using TranZformer?
    Modified valve body?
    Thanks james
     
  14. Dookie

    Dookie Foe twenny sics

    Messages:
    2,884
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    Baton Rouge, Louisiana
    Should be James, see here: http://www.zautotech.com/tranzformer.html

    Never owned the silver box, but from what I've gathered, it's like going from analog to digital in comparison. With the Tranzformer you can adjust (tune) it via laptop or desktop.

    No blue tops needed, but they can run together with Tranzformer.

    No modified valve body needed, but they can run together with the Tranzformer.

    I really like mine, for the shift firmness, quickness of shift, and fully adjustable...plus it has some cool features like Steering Wheel Shifts, and Line Lock...Cool little device.
     
  15. NetNathan

    NetNathan Not the Momma

    Messages:
    1,790
    Likes Received:
    0
    Joined:
    Nov 9, 2007
    Location:
    Corona, CA
    ^X2

    Sent from my DROID RAZR using Tapatalk
     
  16. TNCHARGER

    TNCHARGER Moderator

    Messages:
    4,000
    Likes Received:
    0
    Joined:
    Oct 15, 2007
    Location:
    East TN
    I have the Tranzformer...kick in the back shifts....
     
  17. Jamesmost

    Jamesmost New Member

    Messages:
    2
    Likes Received:
    0
    Joined:
    Dec 4, 2011
    Thanks for the input,,,,waiting for new batch"......James