Loud high pitch noise when at higher rpms s55

[ddzierzega1]

Hey I have a 2018 bmw m3 I been having an issue with my car for a couple months with a high pitched sound that sounds like it’s coming from the driver side when I’m under boost. As soon as I go above 3-4k rpm it makes this supercharger whine. I’ve smoke tested the car and haven’t been able to find the leak and took it to shops. I’m really annoyed with this problem and I’m trynna get it resolved. The mods I have done are mishi moto chargepipes, ftp turbo inlet, and a aftermarket jpipe.

https://youtube.com/shorts/LaNQv-uKV...JtWqx8o9dj5kPx

[ddzierzega1]

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[123ersan]

Originally Posted by ddzierzega1

Hey I have a 2018 bmw m3 I been having an issue with my car for a couple months with a high pitched sound that sounds like it’s coming from the driver side when I’m under boost. As soon as I go above 3-4k rpm it makes this supercharger whine. I’ve smoke tested the car and haven’t been able to find the leak and took it to shops. I’m really annoyed with this problem and I’m trynna get it resolved. The mods I have done are mishi moto chargepipes, ftp turbo inlet, and a aftermarket jpipe.

https://youtube.com/shorts/LaNQv-uKV...JtWqx8o9dj5kPx

Did you solve this?

My cars been doing this for months now.
Doesn’t seem to have affected performance at all and everything is brand new.
I’m guessing cold side air leak somewhere as it’s more of a suck sound than a blow if that makes sense.

[Vavinci]

Originally Posted by ddzierzega1

Hey I have a 2018 bmw m3 I been having an issue with my car for a couple months with a high pitched sound that sounds like it’s coming from the driver side when I’m under boost. As soon as I go above 3-4k rpm it makes this supercharger whine. I’ve smoke tested the car and haven’t been able to find the leak and took it to shops. I’m really annoyed with this problem and I’m trynna get it resolved. The mods I have done are mishi moto chargepipes, ftp turbo inlet, and a aftermarket jpipe.

https://youtube.com/shorts/LaNQv-uKV...JtWqx8o9dj5kPx

I am hearing a similar sound. Have you resolved it? Dealership mentioned it might have something to do with the alternator.

[Cowsgomoo1284]

Glad to see someone else has this. I didn’t even know what to search when I heard it. Mine went away on its own, no idea what it was

[123ersan]

Still no luck here guys? I have the exact same noise. Only shows itself in sports+

[WarMachineM3]

Did you take the o-rings from the oem charge pipes and put them on the aftermarket charge pipes?😆