Afr or co readings
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Thread: Afr or co readings

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    GBo
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    Afr or co readings

    Hi folks for reasonable performance but not drinking fuel like it is free.
    what afr or co readings do you get across rpm and throttle opening? I finally got my afr gauge working properly so now to get mapping.

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    Senior Member Rick67's Avatar
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    That sounds interesting ..
    Never had mine checked .. but will at some point . I get about 38-42 mpg ... Sometimes lower if the red mist sets in
    yamahamad likes this.

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    Senior Member Engenia's Avatar
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    Errol Kowald
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    If you want power, aim for 13:1
    For economy up to 15:1 - but you will have to be careful with detonation. Use this if you have 2 maps. You wouldn't want to be stuck with this all the time
    Of course, if you have a closed loop system (ie. a narrow band O2 sensor) the ECU will take control of the cruise conditions and lean it out regardless of the map.
    My Tornado prefers to idle at 12:1 or a little higher, to reduce the likelihood of stalling
    GBo likes this.
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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    GBo
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    Alex from maniac said to set it at 13 at 3000 I just wondered if it should vary depending on rpm or throttle.
    I have a hesitation mid rpm on full throttle but haven’t had the afr gauge working until now. And of course I have no way to record these figures except for my terrible memory.

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    Senior Member Engenia's Avatar
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    Errol Kowald
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    Quote Originally Posted by GBo View Post
    Alex from maniac said to set it at 13 at 3000 I just wondered if it should vary depending on rpm or throttle.
    13:1 gives the best burn for max power, regardless of rev or throttle position.
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    GBo likes this.
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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    Have only recently purchased my Trek. I am guessing I should be able to get better than the 26mpg that I'm getting

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    Senior Member Rick67's Avatar
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    Quote Originally Posted by doug View Post
    Have only recently purchased my Trek. I am guessing I should be able to get better than the 26mpg that I'm getting<img src="https://www.benelliforum.com/forum/images/smilies/frown.png" border="0" alt="" title="Frown" class="inlineimg" />
    Yes you will indeed . About 40mpg is achievable

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    Quote Originally Posted by Rick67 View Post
    Yes you will indeed . About 40mpg is achievable

    I wish, I have never got more than 35 ish, on a tour ride, like down to the New Forest, Sammy Millers across country on a 900.
    Its all A roads and 40 to 60 mph, with the overtaking . 30 mpg is about right. a good thrash and its less than 100 miles to the tank, and gasping for fumes .
    They are great bikes ,but they love the Go juice.

    My R1 does less than 10 to the gallon on track . best bike on fuel I have is the old RRX Blade, Donnington to Ross on Wye did 42 to the gallon at 80 to the 100 all the way.
    Motorway and dual carriageway, only bit of fun was the m5/ m50 peel off, all the way round the big roundabout.
    Last edited by freeatlast; 06-26-2020 at 02:19 PM.

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    Senior Member Rick67's Avatar
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    Honestly I see regular returns of 38 to 41 mpg . Best I ever had was 187 miles to 20L ... Admittedly that occasion I was like riding miss Daisy (with a gallon can on back seat) .
    Almost coasted into the halt cafe garage just outside Builth Wells towards Rhayader one sunny day .
    Mostly get just under 40mpg.
    Not hanging about either .
    Mind you with this arrow can on now that'll be blown well out of the water haha ..

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    Senior Member yamahamad's Avatar
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    Most i have done on the tornado is 115 miles when light came on & took 11 litres to fill, usually its 90 something & light is on, the thundercat on the other hand does 220 miles when light comes on, 18 litre tank with light coming on with 3.5 litres left in tank. I do try to ride with mechanical sympathy but do open them up too.

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