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Thread: Red beams 3sge swap

  1. #1
    Forum Member Grease Monkey
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    Default Red beams 3sge swap

    Getting stuck into a beams swap on an ae101

    Found a great st202 beams however it has no ecu it will be supplied with an automatic ecu

    What type of potential issue will I face I I use the auto ecu?

    It seems manual ecu's are quite hat to find so far

    Regards

  2. #2
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    Default Re: Red beams 3sge swap

    If no manual ecu becomes available

    Is there a plug in unit such as a power fc?

  3. #3
    Junior Member Automotive Encyclopaedia
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    Default Re: Red beams 3sge swap

    No plug in option.

    I vaguely remember there was a guy in the states that has switched between auto and manual red and greytop ecus without issues. I'll see if I can find the thread. But I dont think you'll have any issues.

    Blacktop has elec throttle so you possibly would in that situation, but redtop is cable.

  4. #4
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    Default Re: Red beams 3sge swap

    Sounds good

    It the only thing that's holding me back

    Any thing you can dig up would be welcomed

  5. #5
    Forum Member 1st year Apprentice
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    Default Re: Red beams 3sge swap

    You can just use the auto ECU, I have an auto ECU running my manual 3sgte and no problems at all. If you have a wiring diagram for it then just check what voltage the neutral start wire needs, in my case it was 0v to start so I just left it disconnected. I have some codes for missing shift solenoid etc but nothing that puts it into any sort of limp mode. So the auto ECU is still an option. Probably better than sourcing a grey top ECU as they have a slightly different tune and make less power
    Or standalone

  6. #6
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    Default Re: Red beams 3sge swap

    I would have thought the rpm parameters would be different ?

    I know nothing about ecu's so please bear with me haha

    Thanks for the advice guys

  7. #7
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    Default Re: Red beams 3sge swap

    Any wire tips would be welcome
    Best prepare myself

  8. #8
    Forum Member 1st year Apprentice
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    Default Re: Red beams 3sge swap

    I haven't had any issues with mine making power or revving at all. According to the scan tool, the ECU thinks it's in 3rd I believe, but still allows it to start because of the neutral start switch wire having a 0v input (so it thinks it's in neutral too?). Other than that it's pretty much the same as wiring for manual ECU. Just make sure all your coils, injectors & sensors are getting the correct voltage to them and the ECU has it's powers and earths. Sounds simple enough haha

    Have you got any wiring diagrams at all?

  9. #9
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    Default Re: Red beams 3sge swap

    Not yet

    I'm guessing I'll need an auto wire diagram right?

  10. #10
    Forum Member 1st year Apprentice
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    Default Re: Red beams 3sge swap

    Usually they come on the same diagram & it just has ** saying for automatic on the wires & components relating to the auto trans. Might be harder to find a wiring diagram than the actual ECU but have a look around

  11. #11
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    Default Re: Red beams 3sge swap

    Thanks dude makes me feel a bit better

  12. #12
    Forum Member 1st year Apprentice
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    Default Re: Red beams 3sge swap

    No worries if you find some diagrams and need help making sense of them just shoot me a message

  13. #13
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    Default Re: Red beams 3sge swap

    Quote Originally Posted by El Trollo View Post
    No worries if you find some diagrams and need help making sense of them just shoot me a message
    Awesome thanks again

    I have seen quite a few wire diagrams Looking around on the phone

  14. #14
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    Default Re: Red beams 3sge swap

    Bit of an old thread, but just letting you know that there IS an alternate solution. You can use an Apexi PowerFC from a 1ZZ engined car (So ZZW30 Spyder, 7th Gen Celica GT from the states, some Corollas etc) and there are a few minor pin changes to make and you can use it on the red top BEAMS.

    Also, as stated above with a few little tricks you can just use the auto ECU. Or buy a manual one.

    I'm going to be doing a Beams redtop swap from ST202 to my ST204 Celica very shortly How did your project go?
    1997 ST204 Celica ZR - Silver -----> See it here on 6GC!

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