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zc sohc vtec/ p28 ecu

Discussion in 'ECU's, Electronics, and Tuning' started by jotech-coupe, Jul 5, 2003.

  1. jotech-coupe

    jotech-coupe Junior Member

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    I have a zc sohc vtec w/ p28 .The zc does not come w/ a vtec press. switch . question is is there anyway to engage vtec w/o the press. switch or does the ecu have to see that switch?
     
  2. blundar

    blundar Senior Member

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    yes there is. The proper way to do this would be to remove the check for Vtec pressure from the code. This is not beginner territory, however.

    There is a discussion about this over on the PGMFI.ORG site right now... Development/OBD1 forum. The discussion centers around activating vtec without the 25mph speed requirement, but would apply equally to your situation.

    At a minimum, you are looking at a chipped ECU with custom program.

    The *easy* way of doing this would be to add a wire from the Vtec pressure pin on the ECU (look it up - I don't remember off top of my head) to ground. This will effectively fool the ECU into thinking it always has vtec pressure.
     
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