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Thread: Fitech PWM setting

  1. #1
    Senior Member
    Join Date
    Mar 2017
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    Fitech PWM setting

    I’m using a Fitech 600 with a feed and return line along with a Walbro fuel pump. I don’t need to use PWM and more importantly the Walbro does not support it. I need to turn the setting off or above 74.9 so the pump gets a constant 12v. My question is that there is a low, mid and high setting for the PWM in the Fitech. Can I simply set all 3 at 100 so the pump constantly runs as I need it too?

    Thanks,

    Steve
    Build#1: MKIV Roadster #9320

  2. #2
    Boydster's Avatar
    Join Date
    Aug 2014
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    Maryville, TN
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    Have you changed anything in the Fuel Pump Control section on the handheld? If not, I recently learned that from the factory, the PWM is set to OFF... its disabled... by the PWM Lo Flow setting under Fuel Pump Controls. What I've read is that it's set at 74.9 and that disables PWM. Turn off Pro Tuning if you dont plan on doing serious tweaking. Normally you would never see that Lo/Med/Hi.

    If you have played with settings, you can always revert back to factory settings and then just do your setup again. According to factory, PWM will be off.
    ---Boyd---
    MkIV #9042 build thread
    www.boss427.us
    427W, TKO600, Moser 3.55 rear.
    Delivered Feb 2017, Graduated Nov 4, 2019

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