IMRC problem

Discussion in '2015+ S550 Mustang 5.0L Tech' started by Sofakingfast, Feb 25, 2015.

  1. Sofakingfast

    Sofakingfast forum member

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    900 miles and I got a CEL p2005 p2008....:damnit:
     
  2. Steve@Tasca

    [email protected] Official Site Vendor

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    Hmm, be sure to post up what happens. Taking it in right?
     
  3. 09Silverbullet

    09Silverbullet Junior Member

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    Geez, I wonder why Ford is back tracking utilizing those things? They used those on the old 4.6L 3V and 4V. Seems like more of a pita to me...... LOL.
     
  4. Steve@Tasca

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    Because they actually work really well in normal use, they can be problematic but for the most part do what they're supposed to do.

    My SVT Focus uses a dual stage/IMRC setup and it works exceptionally well to give the car more usable power across a much wider range than a fixed intake can do.

    -Steve
     
  5. 07TGGT

    07TGGT @user

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    Exactly.

    The low to mid range torque on a S550 compared to a S197 is pretty significant. I can definitely tell the difference. My average MPG is about 2-3 more MPG than the 13 GT I had. So I would say the work well.

    What exactly is the code OP?
     
  6. Steve@Tasca

    [email protected] Official Site Vendor

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    What year car?
     
  7. Dino Dino Bambino

    Dino Dino Bambino I have a red car

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    Yeah, on the 4.6 3v the charge motion control valves work so well that deleting them is a popular mod on this engine. ;)
    Contrary to popular myth there's no loss of low rev torque if you install delete plates and revise the tune.
     
  8. 07TGGT

    07TGGT @user

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    People only delete them because they have been known to break at the butterflies.
     
  9. Dino Dino Bambino

    Dino Dino Bambino I have a red car

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    Those are extremely rare cases. More commonly the butterflies become encrusted with oil vapors coming from the PCV system even on low mileage engines, and that can cause them to stick in the closed position resulting in a loss of higher rpm performance.
    That said, their only real function is to increase air "tumble" at idle and low rpm to improve emissions, especially during cold start-up. I deleted mine more than a year ago and I certainly don't miss them.
     

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