So I was going into work today and noticed a sound that I have not yet heard. I only occurs during a certain RPM range, or so it seems. I was cruising along at around 80 mph and let off of the throttle. When I did, I heard what could be described as a loud "wind tunnel" kind of sound.... you know the kind of sound you get when its windy outside and it's blowing through your windows and screens on your house. Is this a sound I should be concerned about, or is this normal? I was also next to one of those concrete road barriers that separate traffic.

 

bump de bump

 

I suggest you go to the HD Tech forum, driveline, and post this question. You're more likely to get a response. Sorry I can't help you.

 

sweet... thanks Whaap