I think I've had something like this twice recently. Most recently (on my way back north fom Auto Italia), I had a sudden loss of power when accelerating. Engine felt like it was really limited and wouldn't pick up over around 3000 - 3500 revs. Then it actually felt as if it was "missing" and momentarily seemed to lose all power. Pulled over and revved it hard in neutral for a few mins, and it seemed to work ok after that. No warning lights.
Earlier on in the journey it had been very wet (heavy rain and very deep puddles!), and the engine wouldn't rev as high as normal, so I'd have to change up sooner than I might have liked. I wondered if it was plugs, fuel pump (or dirt somewhere), but could a failing MAF cause this sensation of the engine feeling throttled, then the power loss?
Sorry for the thread necromancy!
159 2.4 Lusso Qtronic (Sold)/916 Spider P1 TS (Sold)/Giulietta 1.4 TB MA 170 TCT