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switch in my new car.. someone help

Guest Boxhead

By Guest Boxhead,
in General Automotive Discussion

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Guest Boxhead

Guest Boxhead

Posted
Posted

ok, well i have this switch in my new car, sitting all alone, and its wired directly to the ecu,

i have had suggestions that it could be a boost controller. and also, some one else has said that it could be a idle changer, but it didnt do anythin either way for that to be it.. any thoughts??

http://www.lexicon.net/julieelliott/car/car%20005.jpg

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https://www.sau.com.au/forums/topic/13615-switch-in-my-new-car-someone-help/
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AndyMac Experienced

AndyMac

Posted
Posted

I have heard of some Japanesse installing switches linked to the ECU as a remote "reset" switch. When pressed it resets the ECU, and/or puts it in diahnosic mode.

Thou, I think you'd hope for a performance switch then a reset switch.

I too have a unknown red button in my car.

It may also be an attempt at some sort of kill switch ???

darkhalf Community Regular

darkhalf

Posted
Posted

yeah three wires coming out.... im saying its an eprom switcher. you can switch the upper address pin on a larger eprom and select between two programs. make sure your ignition is off (and prob disconnect the battery terminal - i dont know if the program runs on this ECU when ignition is off but better safe than sorry) before flicking it!

you'd have to take the cover off and give us another pic where the wires come from. prob switches to another program to swap all the mappings over. just depends what those mappings are set to (higher octane?)

matt

darkhalf Community Regular

darkhalf

Posted
Posted

they have some type of automotive glue/laquer on the screws.

i tried different screw driver tips until one fitted 'nicely' to remove the covers from these types of ECUs. you have to push into the screw while putting pressure to turn it (to prevent rounding) and hopefully it should 'click' to losen it

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