Q: Chasing Ignition timing angle?

Discussion in 'Fuel Economy' started by Appletank, Nov 20, 2019.

  1. Appletank

    Appletank Lightly toasted

    Can anyone explain what this does? I saw a thread about holding angle 14 or 30, not sure of stuff after it.
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  2. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi AppleTank:

    In the Gen2 Prius, you use a ScanGauge to maintain a set IGN while driving with load (DWL). That is a very high efficiency area for higher speed driving. Gen3 never really had much to offer beyond the Gen2 in this regard.

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  3. Appletank

    Appletank Lightly toasted

    Thank you Wayne

    Is there a similar number for non hybrids?

    - Appletank
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  4. BillLin

    BillLin PV solar, geothermal HVAC, hybrids and electrics

    Appletank, what gauges do you have available to you when you're driving? What do you drive? Knowing these things may help people provide helpful comments. Thanks.
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  5. Appletank

    Appletank Lightly toasted

    2008 toyota matrix, the obd app i use has a bunch of gauges that for the most part i don't understand, but the ones I'm currently using are:
    Instant mpg
    Trip mpg
    Fuel rate (gal/hr)
    Ignition timing advance (angle)
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  6. MaxxMPG

    MaxxMPG Hasta Lavista AAA-Vee Von't Be Bach

    Also consider:
    - Coolant temperature (CTS) - to let you know when the engine is fully warmed.
    - Throttle position (TPS) - to allow you to find the lightest pedal touch (lowest TPS value) to maintain a given road speed.
    I also keep battery voltage on the display for those times when you're at a long red light and you're key on / engine off and not wanting to run the battery down.
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