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Auto VS Manual ECU

Discussion in 'ECU's, Electronics, and Tuning' started by reckedracing, Jun 4, 2004.

  1. reckedracing

    reckedracing TTIWWOP VIP

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    ok, i have a long running debate with my friend regardin auto vs manual ecu's...
    i have read on here to use the computer that goes with your tranny and relayed this information to him

    but he claims that you can use an auto computer
    he claims his friend is running a P13 AT on a 5 speed H22 swap in an accord...

    so my question is...
    WHAT is the diffrence?
    i have searched and found some info...
    for example there are diffrent jumpers? or whatever in a P28 that you would remove to make it a manual computer... but what do they do?

    does an auto computer make the motor not reach its full potential?
    i just don't understand how they differ and i really need a solid answer to prove my theory...

    any help?
     
  2. radnulb

    radnulb Senior Member

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    auto ECUs check for auto trans lockup solenoid.
    on manual cars, they will throw a code 19 when they fail to find it.
    With a code, the ECU gets "dumbed down" and it will generally pull timing and run in a more conservative manner. I say "generally" because I have not specifically dissected the P13 code to find out what the error handling procedure is like.

    You can convert P13 from auto to manual by moving configuration jumper resistors.
     
  3. reckedracing

    reckedracing TTIWWOP VIP

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  4. cheese9988

    cheese9988 Senior Member VIP

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    I converted a pm7 ecu myself, took all of ten mins, works great. There is a writeup on pgmfi.org on how to do it.
     
  5. dc2_ls

    dc2_ls Junior Member

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    can the ecu go the other way? i have an AT, can it get a MT ECU for my lsvtec and still run properly? or do i need a AT ECU?
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    it can be done, but i don't know of anyone who has.
    its kinda pointless- manual ecus go for more cash than auto ones (supply and demand). you can make a profit off selling your manual and buying an auto, for sure.
     
  7. cheese9988

    cheese9988 Senior Member VIP

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    Ya, I took an auto pm7 and made it a manual pm7. Its real easy and you dont need much electrical knowledge to do it, a pair of wire cutters and solder in one wire. As long as you can do it to the ecu you have.
     
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