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Thread: Removing multiplex from 7MGTE for less than $200

  1. #21
    Supramania Regular
    TheNewRed's Avatar
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    Default Re: Removing multiplex from 7MGTE for less than $200

    So would 89621-33010 ignitor work? From 92-93 ES300, 93-97 GS300, 92-97 SC300, 92-93 CAMRY, and 94-97 Supra?

  2. #22
    Grease Monkey

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    Default Re: Removing multiplex from 7MGTE for less than $200

    Not unless you are still using a distributor - that ignitor is for the old style distributed 2JZ-GE

  3. #23
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    Default Re: Removing multiplex from 7MGTE for less than $200

    so we need an ignitor from a vehicle from 98 and up? will a GTE ignitor work from a 93-98?

  4. #24
    Grease Monkey

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    Default Re: Removing multiplex from 7MGTE for less than $200

    Yes - you need the GE ignitor from 98 and up. The GTE ignitor will NOT work as it is 6 channel.

    Well, it might if you only wired up 3 of the channels, but honestly I have no idea.

  5. #25
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    Default Re: Removing multiplex from 7MGTE for less than $200

    I've picked up an IS300 igniter and can not wait to get ride of that silly miss. This will go on a stock ignition system being controlled by the AEM. After that, it's sequential injection time with the injector dynamics 1000s.

    Time to use this 40r.
    alan jordan
    GT40R'd mk3
    terre haute, in

  6. #26
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    Default Re: Removing multiplex from 7MGTE for less than $200

    Removing multiplex from 7MGTE for less than $2



    The circuit above turns the 7M ignitor into a simple 3 channel ignitor with automatic dwell adjustment built in, for the cost of five 1N4001 diodes.
    I had this circuit on my 7M making around 500whp and revving to 7500rpm, with nice smooth idle... a few years ago.
    The stock 7M ignitor is a great unit, it's the AEM standalone not being able to control it correctly that's the problem.
    Last edited by bigaaron; August 25th, 2009 at 10:43 PM.

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  7. #27
    The quiet one
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    Default Re: Removing multiplex from 7MGTE for less than $200

    Cars that still have the stock TCCS have this problem problem too. Mine did, several that Adam (drjonez) worked on did. It's likely due to noise and ringing in the wiring harness as components break down over the years. In a close to stock car the TCCS seems more resistant to it though.

  8. #28
    Grease Monkey

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    Default Re: Removing multiplex from 7MGTE for less than $200

    I had considered using the diodes, but with using the IS300 coils already, and a reluctance to keep using 20+ year old electronics, I decided to just bite the bullet and upgrade the ignitor to a much newer one.

    Grounding the case on the AEM unit to the engine block (just by tapping the ground pins on the plugs) helps to reduce any residual missing.

  9. #29
    Regular Member

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    Default Re: Removing multiplex from 7MGTE for less than $200

    a friend of mine installed the ds62 ignitor and if he changes the spark teeth from 4 to 12 the car dies. he has followed the instructions.

    the car misses and breaks up when boosting. runs better on multiplex.

    any ideas?

    hal
    Hal
    90T

    522+ rwhp
    Finally running again after 3 years.

  10. #30
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    Default Re: Removing multiplex from 7MGTE for less than $200

    I used this guide and did it to my car as we converted it to AEM, and it works great! Just be sure to go through the dwell timing wizard and select the 98+ 2JZGE setup. Pulls cleanly all the way to redline without any issues!

    EDIT: I used a IS300 DH61 ignitor.
    Last edited by toyotanos; November 13th, 2009 at 10:22 PM.
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