Apex steering booster

[Dustin Farmer]

I recently had a shop install the Apex steering boost valve on my 2019 Rubicon. I noticed a faint, high pitched sound, coming from the steering box. I realize the psi has greatly been increased, but has anyone else out there experienced this using the Apex system?

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[Medsker]

My 2019 had a whine after the install but my 2024 does not. The shop dude said they haven't figured out why some do it and some don't. I called APEX about it and they said a whine is normal.