I've noticed this week that as I enter the highway and begin accelerating hard, I hear a swooshing noise with a jet turbine type pitch coming from under the car (E1 with 60k), seemingly independent from the beautiful engine noise.
It is ONLY when I accelerate - as soon as I ease off it goes away - especially in lower RPMs of higher gears.
I thought it was maybe some sort of hole in the exhaust, but as I said, it only occurs when there is tension in the drivetrain. There is no noise if I just rev out of gear.
I know its coming from under the car because as I pass over different road surfaces the intensity changes.
No noticeable performance degradation.
Anybody know where it might be coming from???
