i have seen this a few times in the past. only when a cai was installed without a tune. sometimes it reads a sudden rush of air on the maf. if it happens again, switch off the car, remove both battery cables and touch them together, then replace the battery cables and start the car. drive the car for a few miles but make sure to floor it at least 3-4 times.
basicly what you just did is reflash or reset the computer. it will relearn what it has to do to control the air flow. after that you should notice a small increase in power too.