986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - still have a whistle/hum after regen valve

boxxster · 03-09-2016, 08:09 AM

Only makes it when I am holding a constant cruising rpm (2500-3k ish in my case). If I give it gas or let off it goes away. It seems like I need to be driving at a constant speed for at least 15 or 20 seconds before it comes on.

03-09-2016, 08:09 AM	#5
boxxster Registered User Join Date: Nov 2015 Location: ontario Posts: 377	Only makes it when I am holding a constant cruising rpm (2500-3k ish in my case). If I give it gas or let off it goes away. It seems like I need to be driving at a constant speed for at least 15 or 20 seconds before it comes on.