Have never operated the V2500 but I did ride in the MD90 a few time recently. On the last flight I was near the very back with a view of the engine inlet. I was curious if it would have the same as the JT-8D on the 727 where as the engine is spooled up for takeoff, perhaps due to low pressure, there is a rope-like moisture condensation coming from behind and outside of the engine into the inlet. It did not happen.
But it was a night flight and as reverse was applied on landing, I saw what looked like a bunch of sparks or speckles of light in the intake which lasted until reverse thrust ended. Interesting.