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Thread: Sudden mpg drop

  1. #1
    VXRed XenonVXR's Avatar
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    Default Sudden mpg drop

    Hey guys,

    Recently fitted a 3Ē scorpion cat back non res, was running absolutely fine then either my coil pack or plugs went, Iíve since changed them both and now all of a sudden Iíve gone from filling up once maybe twice a week to three to four times, whatís this because of? Is it due to me needing a remap for the exhaust?


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  2. #2
    VXRed blooded
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    Coolant temperature sensor?


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  3. #3
    VXRed XenonVXR's Avatar
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    Temps are all fine, oil lights always coming on but itís always at the correct amount, I need to change that sensor but that wonít change how much fuel it uses would it?


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  4. #4
    VXRed blooded
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    Quote Originally Posted by XenonVXR View Post
    Temps are all fine, oil lights always coming on but itís always at the correct amount, I need to change that sensor but that wonít change how much fuel it uses would it?


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    No but the coolant temperature sensor will even if your temps are fine.


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  5. #5
    VXRed XenonVXR's Avatar
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    Hmm great, how would I know if thatís whatís gone? And on top f that where abouts is it located?


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  6. #6
    VXRed
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    Default

    It's because you are giving it more beans to here that new exhaust.

  7. #7
    Are you VXR enough?
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    Default

    Quote Originally Posted by XenonVXR View Post
    Temps are all fine, oil lights always coming on but itís always at the correct amount, I need to change that sensor but that wonít change how much fuel it uses would it?


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    Get it mapped itís the best way to get the fuel/air ratio all correct to get the best mpg, my stage 3 as same exhaust with Scorpion sports cat and I get around 18mpg on a thrash and 32mpg on a run


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  8. #8
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    Quote Originally Posted by GPH69 View Post
    I get around 18mpg on a thrash and 32mpg on a run
    Jeez I don't miss those days lol
    Corsa SRI Turbo (SOLD) and Facelift Corsa 1.4 SE (SOLD) - Now Ecoboost Fiesta 140 and Suzuki GS500

  9. #9
    VXRed blooded
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    My Astra vxr does 32mpg round town


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