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Thread: Can Alky/h20 affect Wb reading

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  1. #1
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    Can Alky/h20 affect Wb reading

    i having some weird Wb reading under hard boost ie. running lean and i only started this after i brought my alky system on line 2 weeks ago . i have been chasing fuel pressures/ modifying my cal and nothing seem to help . I was going to turn off the alky but right now i have a full tank of 91 in her and the rain has started and for the sake of safey i not testing it . Dick (boostgeek) was seeing the same thing but the car is currently on the back burner


    Has anyone seen this and have any ideas?

    also current mix is 50/50 and the system is progressive on at 7 and full at 18

  2. #2
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: Can Alky/h20 affect Wb reading

    Yes, alky can alter the readings, not sure how much, but pretty sure Mario posted up on one of my threads the difference. Google it too.
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  3. #3
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    Re: Can Alky/h20 affect Wb reading

    not much info on google i could find

  4. #4
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    Re: Can Alky/h20 affect Wb reading

    The forums at Devils Own had some info on this when I put the kit on my car some years back.

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    Re: Can Alky/h20 affect Wb reading

    Alhohol is an oxygenated fuel (CH3OH), it will for sure affect the WB readings. The difference is, stoich for methanol is like 7.5:1. So, if you're running a mix, the ideal A/F is no longer the same. It will be much lower (richer).
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  6. #6
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    Re: Can Alky/h20 affect Wb reading

    hmmmm i have gone from 11.9 to 14.9 at 20psi
    i got no problem going to 100 methnol if needed
    I just feel im missing something

  7. #7
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    Re: Can Alky/h20 affect Wb reading

    Something isn't right, all else equal it should read richer than you were on gasoline.

  8. #8
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    Re: Can Alky/h20 affect Wb reading

    is it possible that is some how affecting my Air charge temp sensor , but again it sound be riching it up the colder the charge????
    i really want to get this sorted out so i can bring the nitrous system on line

  9. #9
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    Re: Can Alky/h20 affect Wb reading

    Sure the wideband is reading correctly?

    What's your exact fuel setup?

    Are you sure its not really lean? When I put my 4" intake system on, it leaned out big time.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  10. #10
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    Re: Can Alky/h20 affect Wb reading

    yes the wide band is working and cal'd correct
    yes my fuel system is ok and more than up to the task
    yes the cal is ok
    it only goes lean when the alky is turned on like i said weird sh!t when it should be getting richer

  11. #11
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    Re: Can Alky/h20 affect Wb reading

    How long will it take 50/50 mix to go bad ???? i mixed this batch 4 months ago

  12. #12
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    Re: Can Alky/h20 affect Wb reading

    Quote Originally Posted by bakes View Post
    How long will it take 50/50 mix to go bad ???? i mixed this batch 4 months ago
    Won't go bad but if you didn't have it sealed up it can suck water out the atmosphere and get weaker.... how long depends on how open the container, how much damp atmosphere in the locality etc etc.
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  13. #13
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    Re: Can Alky/h20 affect Wb reading

    I've run 50/50m that's a year old with no issues.

    Sure the system isn't backfeeding or messing up the MAP sensor?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  14. #14
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    Re: Can Alky/h20 affect Wb reading

    Ding Ding Ding i think we have a winner
    i was fooling around the map sensor checking my map signals to the devils own processor and i found a crimp that had hi resitance
    i will fix it tomorrow at work and report back
    Last edited by bakes; 06-17-2012 at 10:44 PM.

  15. #15
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    Re: Can Alky/h20 affect Wb reading

    Thats good!

    The mix should stay good as long as you have it sealed off from moisture.

  16. #16
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    Re: Can Alky/h20 affect Wb reading

    Quote Originally Posted by Turbo3Iroc View Post

    The mix should stay good as long as you have it sealed off from moisture.
    Huh?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  17. #17
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    Re: Can Alky/h20 affect Wb reading

    Maybe that was for pure methanol.

  18. #18
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    Re: Can Alky/h20 affect Wb reading

    Quote Originally Posted by Turbo3Iroc View Post
    Maybe that was for pure methanol.
    I was bugging as its mixed already so keeping it away from moisture-see the irony?

    Anyhow, I've read tons of ways, glass containers, plastic bottles-think gas line antifreeze, plastic container with a pinhole to let it vent, freezer, fridge. Pick your poison I guess.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

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