Squeal high pitch whine under load

Discussion in 'Fiesta ST Maintenance' started by Tom Brooks, Feb 12, 2014.

  1. Tom Brooks

    Tom Brooks Member

    Just installed Cobb ap 91 octane. I've noticed often under heavy load when letting off gas to switch in and out of 3rd maybe 2nd gears I get a slight high pitch audible squeal. Anyone know what this could be? Is this normal?
  2. Register or Sign in

    Advertisement Sponsor

  3. wash

    wash Active Member

    Did you install their panel filter?

    It might be some turbo whistle you couldn't hear through the old filter.
  4. Tom Brooks

    Tom Brooks Member

    yes I did and I found 2 hose clamps earlier that I tightened down after I swapped the filter. I would swear its coming from the turbo.
  5. wash

    wash Active Member

    Well there you go.

    I hear the turbo more since installing a K&N without a tune.

    Its spinning around 200,000 rpm, let it whine.
  6. D1JL

    D1JL Well-Known Member

    I just wish I could get a little cheese with that whine.


Share This Page