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 ...
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.
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)
2016 Stealth Grey RS2, Dewey: Order placed: 30OCT2015, Built: 3MAY2016, Delivered: 31AUG2016! HG repair 31JAN18, surgery complete 9MAR18 and back home.
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!!!
Cygnus Leader dropped it off in Newark on May 24th!
Arrived at dealer JUL 5th picked up JUL 6th!