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Thread: G37 TB and MAF

  1. #1

    Default G37 TB and MAF

    I've had some poor throttle performance in my G37,

    I've been reading that I should address the MAF and or Throttle Body.

    I see two different TBs from Hitachi from my research. Which one is the correct one and what's the difference?

    Also, which MAF would you recommend I go with?

    I've heard about clean both MAF and TB but also read about issues from the cleanings. Which is why I was looking more towards replacement.


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  2. #2


    I finished cleaning the MAF and TB last weekend. MAF looked clean but the TB was pretty filthy. Car feels smoother, now I just need to get that transmission re flash to fix the downshift jerkiness

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  3. #3
    Senior Member
    Join Date
    Apr 2007


    do you have the 7spd auto?

  4. #4



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  5. #5
    Site Fanatic oolatec's Avatar
    Join Date
    Apr 2010
    That's how you get ants!


    Doubt you need any new parts. The throttle bodies get filthy on our cars. I'd get to cleaning them. (Which I need to do myself)

    Here's a DIY.

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