View Single Post
Old 03-01-2021, 10:25 PM   #4036
Side
Senior Member
 
Side's Avatar
 
Join Date: Sep 2015
Drives: 2018 BRZ tS
Location: Washington
Posts: 212
Thanks: 314
Thanked 114 Times in 69 Posts
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Has anyone experienced a faint hissing/whistling sound at idle on cold start? It goes away after driving for a bit. I don't remember hearing it last year, but I don't think it's the bypass valve either since everything is functioning properly.
Side is offline   Reply With Quote