I've flown pushovers in the 350 and it definitely does not do that white smoke thing
Crab, I can assure you on this occasion it did, a Squirrel some decades ago
, not great plumes as in the video though, having viewed the event I made a point of examining the exhaust and noticed the breather and assumed that may have been the source, pilot was reputed to have trashed an airframe of another type from his vigorous displays.