Does anyone else notice a slight whistle while coasting 30-40 mph under very light throttle (mostly noticeable from 2000 to 2500RPM)? Once I push the throttle more it goes away.
I did a check of the PCV and it does not have the symptoms of going bad (suction from the dip stick or oil cap).
I recently tuned the car adding an upgared downpipe, intercooler and custom tune. I do not notice a loss of power.
It's an 2014 XC60 T6 with the 6-in line engine.
I am assuming that it is a leak in the intake system or in the exhaust (turbo to downpipe), but perhaps it's a common sound and nothing to worry about.
I am posting my query here as there is more traction in this forum than in the XC60 forum.