Is there a computerized component under the floorboard center of the van?

What is your question?

I spilled water onto the center section of the van's floorboard. A mechanic informed me that the water had damaged the computer located under the floorboard. Ha said the computer apparently had been "Fried" and would have to be replaced. The van starts ok but when I accelerate to about 2000 RPM from a dead start the motor begins cutting out and the car lurches until I back off on the footfeed pedal. I don't dare drive on a fast street. I know nothing of the technical tems for auto lingo.