Last night i drove through this massive puddle (couldn't even see it). My car still ran but lost power when i accelerated instantly.

I had to get home so i kept driving, and the car kept going alright, no engine light came on, but tried to accelerate a bit more to check how it was at high revs and it got to a certain point then lost a bit of revs.

It doesn't feel quite right to drive at the moment, but when i started it this morning it started fine, no lights came on, idled fine, but when i accelerated it lost speed again.

I have a cold air intake installed by the previous owner and it is quite low, what could it be??