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5.7 Flex Fuel Questain?

Discussion in 'General Tundra Discussion' started by ragtopp63, Jan 11, 2016.

  1. Jan 11, 2016 at 2:12 PM
    #1
    ragtopp63

    ragtopp63 [OP] New Member

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    Chicago,Il.
    Vehicle:
    2016 Tundra SR5 4X4
    2016 Tundra SR5 Flex Fuel Engine.
    seen some posts ware people want to stay away from flex fuel engine Why is that?
    I don't use flex fuel and don't plan to. I have always used reg. fuel and premo every 3rd or 4th tank full on all my vehicals . what do you recommend?
     
  2. Jan 11, 2016 at 2:24 PM
    #2
    Tracker

    Tracker New Member

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    Shane
    Colorado, Denver Burbs
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    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    My Sierra had it, I could really feel a HP boost with flex fuel. It does take away gas mileage but not as bad as people say. My injectors did gum up and I dont know the cause of it because E85 is supposed to burn cleaner. When gas was $4.00 E85 was like $2.75 and I saved a fortune in gas at the time. Thats all I got for you.
     
  3. Jan 11, 2016 at 3:28 PM
    #3
    Ubc2361

    Ubc2361 New Member

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    Tony
    Los Angeles
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    Had it on my chevy wasn't too fond of it. Besides cheaper the only thing I saw diff was the gas milage really sucked
     
  4. Jan 11, 2016 at 4:28 PM
    #4
    Wynnded

    Wynnded Wait, what?

    Joined:
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    Rockies
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    OEM Upgrades
    It isn't really the engine itself but the electronic side of things. From what I've been reading, the computer/sensor on some trucks software are reading the fuel in their tanks as containing a higher percentage of ethanol than what is actually in the tank. This makes the computer run a different fuel map, a richer one. This makes the engine run very poorly. Some truck owners are finding resolution via a software update from Toyota dealers.
     
  5. Jan 12, 2016 at 8:51 AM
    #5
    Fitz19d

    Fitz19d New Member

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    Black wheel dip. Prodigy P2 Brake Controller
    Wow, like the first person I've seen in my life that has a vehicle they care about and like running E85.....

    Flex fuel doesn't play nice with supercharging without a lot of headache.

    Over the years many repeated flashes and updates to avoid issues with the system reading alchohol when you are on normal gas resulting in rough starts and general feel of wimpiness.
     
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