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  1. #1
    rxp1972's Avatar
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    Problem please read....

    RXP 2006 ET 68-140 XS IC 60 injectors 8650 Les cook ECU Walbro fuel pump fuel regulator I read to the Air/Fuel meter in 5000rpm 0.450mv very pure and at 8500rpm 0.875mv the gauge is Dyno Tyne with bosch sensor. What can i do?The regulator is set to 57psi


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Not sure what those numbers mean However... it sounds as if you need to look into a fuel controller, or a begi regulator set-up if your looking to be able to tune bottom, mid & top independently.

  3. #3
    rxp1972's Avatar
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    here is the numbers. http://www.dynotunenitrous.com/store...p?idproduct=15 so how can i fix the regulator i must raise the pressure and how much?

  4. #4
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    You are running way lean on top @ 13.5... you need to crank up your fuel pressure in 5 pound increments until your running around 11-7 to 12.0 a/f at wot. With a single regulator, thats all you can adjust for... and will have to live with the idle & midrange a/f. Your gonna need roughly 70 psi of fuel pressure at wot.... it sounds like.

  5. #5
    home of the dislexic fingers breon's Avatar
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    that shows 13.2 at wide open..for boosted motors ... i shoot for that at idle...at 13.9 14 it starts breaking up...

    so how many motors do you think have blown up from that chart

    looking for 11.8 ish wide open..11.6 if over say 17 18 lbs of boost..

  6. #6
    rxp1972's Avatar
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    Ok tell me something my fuel regulator is custom the fuel pump had internal regulator that i should disable?

  7. #7
    Isn't this a narrow band o2. If it is it would be better to use a wide band for tuning. Just a thought.

  8. #8

  9. #9
    Quote Originally Posted by rxp1972 View Post
    This is a narrow band, so it will only give you a ballpark reading at WOT. Anywhere less will be unreliable.

  10. #10
    rxp1972's Avatar
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    so you say that this sensor is not reliable? What should i do see at the gauge for being reliable?

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