430 - Any tricks to cleaning the MAFs in a 430 | FerrariChat
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430 Any tricks to cleaning the MAFs in a 430

Discussion in '360/430' started by CoreyNJ, Jul 17, 2025 at 6:30 AM.

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  1. CoreyNJ

    CoreyNJ Formula 3
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    Apr 17, 2006
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    New Jersey Shore
    #1 CoreyNJ, Jul 17, 2025 at 6:30 AM
    I was thinking of doing some preventive maintenance and cleaning the MAFs in my 430. Any tricks to this? Do I need to remove the "screen" or simply spray the whole thing on the inside, including the screen? In the pictures, the MAF differs from the other ones I have cleaned or replaced before on other cars, which aren't in a giant plastic housing.
     
    Daryl Zernick likes this.
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
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    Dominick
    #2 flash32, Jul 17, 2025 at 8:00 AM
    Remove 5 point torx security bolts , remove the actual MAF, then spray directly on the MAF sensor itself where sensing unit is

    Just my two cents ..if you are are not experiencing any issues leave well enough alone
     
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  3. andrejwolk1975

    andrejwolk1975 Karting

    Feb 28, 2020
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    #3 andrejwolk1975, Jul 17, 2025 at 9:06 AM
    If it works properly, do yourself a favour: don't touch it.
    From preventive maintenance to consequent failure is a moment.
     
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  4. Daryl Zernick

    Daryl Zernick Formula Junior

    Jul 7, 2020
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    #4 Daryl Zernick, Jul 17, 2025 at 3:23 PM
    I was experiencing a performance issue. Flooring it, there was way more hesitation than just the traction control, cleaned the MAFs, no difference was made. Replaced the MAFs, car started up horribly, like I put diesel fuel in it. Unplugged the car from battery overnight, connected it back the next day and it was like a I had a new engine installed; no huge lag when flooring.
     
  5. flash32

    flash32 F1 Veteran

    Aug 22, 2008
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    #5 flash32, Jul 17, 2025 at 3:35 PM
    By disconnecting the battery you erased the fuel trim "learnt" curves .. that is the reason
    I hope you did the self learn procedure of letting it idle for 10 mins at after battery disconnect and warm up with no electric draw or AC
     
  6. Daryl Zernick

    Daryl Zernick Formula Junior

    Jul 7, 2020
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    #6 Daryl Zernick, Jul 17, 2025 at 3:39 PM
    Unintentionally, yes. I always let it warm up for 10 minutes without the AC on. Thanks for the input though! It's good to know!!
     
  7. flash32

    flash32 F1 Veteran

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    #7 flash32, Jul 17, 2025 at 3:58 PM
    Anytime you change anything that could change the way things combust..e.g. spark plugs, coils, maf, etc you need to do the relearn process which starts by disconnecting battery and doing the 10 minute idle it's right in the manual
     
  8. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
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    #8 mwstewart, Jul 17, 2025 at 5:24 PM
    When I remember to I take a data log of MAF readings and use a rough calculation to determine horsepower fromg/s of airflow, on so I know if I'm in the right ball park. Keeping track of a few logs over time gives you an idea if anything is off.
     
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