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Thread: Remapping?

  
  1. #1
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    skitz.'s Avatar
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    Remapping?

    Ive seen posts and threads on here which mention 'Remapping'
    Could someone fill me in on what that means, and what it does for the engine?

    Thanks!

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    Your ECU comes with a "map" which is a computer program as such and tells your engine how much fuel to apply to the measured amount of air, throttle position, ignition timing etc

    When you remap the engine, the person will give it a more aggressive map and therefore ... more air + more fuel = more power. So they erase the standard "map" and put a new one on which will give more power.

    On a "forced induction" car (Turbo etc) the gains are large.

    On a "normally aspirated" car, the gains are alot less and sometimes not worth the price. Usually only done after extensive engine work including cams etc.
    Fastest, Most Powerful & Only Mag Featured Astra In The AOC Cumbrian Region

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    your car depending on its age will have an ECU or electronic control unit (iirc)
    The ECU is given certain parameters to work with for example when you bury your right foot
    the ecu will take in to account what speed your doing and what the sensors on your engine are saying from that it will then say arite then lets give it this much fuel and this much air

    Remapping changes the parameters and how the ECU reads the sensor readings

    so you can make the car have more bhp, torque and fuel economy and the way the engine delivers its power by making it work slightly harder


    well thats how i understand it anyway
    probably missing out a lot but im sure someone else will expand on what ive written

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