ok, 2 problems here 1st- I've had this truck a few weeks, and had a tranny flush and complete service done. now on a road trip 2 states a way, sometimes I smell tranny fluid while we are driving, and when we are stopped. crawled under the truck and no leaks, checked all over under the hood, and it is dry. truck is running fine and shifitng fine.
2nd- I just installed a banks intake and sooper scoop, now when I hit 65mph or above and start to build boost, there is a whistle like when you blow over the top of a partially empty pop bottle. Only does it when above 65mph, and goes on and off when I let off and on the throttle. I have checked all the clamps on the intake..... I don't know if it is possibly the holes on the back of the super scoop doing this.

Truck is an 03 3500 dually. thanks.

 

Probably the super scoop itself (wind is catching it just right). Check to see if your stick reads full, and isn't over.