Unless you were using a high pressure power washer and was spraying around the TPS, I doubt it would have gone bad because of a little water.
Hi-flow? With a snorkel, it will be a bit better then a stock system. There is a lot of piping and with that a lot of bends. The air flow should be faster since the snorkel is in the air flow rather then in the engine compartment. It will also be cooler as your not sucking hot engine compartment air. Most high-flow systems are really bad about this. Really though, a snorkel isn't about hi-flow. It's about getting clean air. (either by dirt or water)