How do larger injectors affect the MPG Guage?

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  • AlexHale
    Wrencher
    • Nov 2012
    • 230

    #1

    How do larger injectors affect the MPG Guage?

    Switched from the stock injectors to 19lb injectors with the Miller MAF conversion. To my understanding the MPG meter on the IC and in the OBC is calculated based on time the injectors cycle open? And maybe more info. Does anyone know how the change in flow rate affects the calculation?
    Originally Posted by Exodus
    He also kept asking why someone local didn't just go to the guys house and break his kneecaps, as they would do in Romania. He couldn't understand how us Americans are so laid back about shit like this.
  • AlexHale
    Wrencher
    • Nov 2012
    • 230

    #2
    Bump
    Originally Posted by Exodus
    He also kept asking why someone local didn't just go to the guys house and break his kneecaps, as they would do in Romania. He couldn't understand how us Americans are so laid back about shit like this.

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    • jeffnhiscars
      R3V OG
      • Jun 2011
      • 6010

      #3
      I have 19lb injectors as well plus N SSSquid chip and my once mpg readings are different from my calculated mpg using the old fashioned odometer/gal formula so I'd say yes, it effects it but can't say exactly by how much
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      • Hooffenstein HD
        Banned
        • Nov 2012
        • 1388

        #4
        It will depend on the tune and size of injectors as to how much effect it has. The larger the injectors, the less time they have to open so economy gauge is going to read lower.

        Mine used to read around 9 at cruise, and now with 19lb it reads more like 6 in the same conditions.
        Last edited by Hooffenstein HD; 07-30-2015, 05:40 PM.

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