| 08-25-2025, 04:44 AM | #1 |
|
Registered
0
Rep 1
Posts |
M140i whistle noise low revs
Last month I picked up a 2018 M140i B58 with 75k miles on the clock which is stage 2+ with sports cat. I only just noticed this whistling noise when lifting off throttle and the revs drop to around 1-2k rpm. I've changed the PCV for a new one and didnt make a difference. It is not flagging up any errors in ISTA. The car still pulls hard and no suspicious noise when going up the rev range. Does this sound normal?
https://youtube.com/shorts/XQla0sQK1WM?feature=shared |
Post Reply |
| Bookmarks |
| Thread Tools | |
|
|
