High pitched whistle at high RPM after flashing tune
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High pitched whistle at high RPM after flashing tune

This is a discussion on High pitched whistle at high RPM after flashing tune within the Focus RS TroubleShooting forums, part of the Focus RS Garage category; Hi all, So flashed Tune+ yesterday and it's fantastic, but now I occasionally have a high pitched whistle around and above ~5.5-6k rpms. No loss ...

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Thread: High pitched whistle at high RPM after flashing tune

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    RS Specialist Rewdan's Avatar
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    High pitched whistle at high RPM after flashing tune

    Hi all,

    So flashed Tune+ yesterday and it's fantastic, but now I occasionally have a high pitched whistle around and above ~5.5-6k rpms. No loss of performance, boost is steady, everything appears fine... is this just intake noise that's decided to pop in with more power now? Haven't encountered anything like this before (limited experience with performance cars to begin with).

    Any suggestions or input are appreciated.

    Cheers

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    Contacted Adam?

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    Super Moderator Hoonigan's Avatar
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    Anytime I've heard a high pitched whistle, it's been a loose FMIC hose about to pop loose.
    2013 #2008,#349 of 2286 in PB ST2, Mountune CBE, CAI, DP, re-circ valve, and Strut Tower Brace, FRPP shifter, K&N filter, Steeda rear sway/strut tower bars, 3M clear bra, WeatherTechs w/ST badges, Zunsport grill kit, Tail of the Dragon decal, Hoonigan crash bar!
    2015 Tuxedo Black FiST (Daughter)
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    RS Specialist NoRagrets's Avatar
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    Isn't this why Mountune came out with that sound suppression chamber?

    mountune Sound Suppression Chamber Focus RS 2536-SSC-AA
    FW RS1 w/ Moonroof

    Ordered Jan 7th
    B.W.B.M.F. on APR 7th!!!
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    RS Specialist Rewdan's Avatar
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    Quote Originally Posted by NoRagrets View Post
    Isn't this why Mountune came out with that sound suppression chamber?

    mountune Sound Suppression Chamber Focus RS 2536-SSC-AA
    That's what was suggested on Adam's FB page by an admin, so I think that's the likely cause. Currently I don't really mind the noise, I just wanted to make sure nothing was on the verge of going wrong. Thanks all.

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