MitsuStyle - Bad ecu?

So the car has been starting/ consuming alot more gas lately (not even 200miles to a fwd auto) and had a couple days in a row an issue with initial start up. Today it wouldn't start but was turning over so I popped the hood and smelled flooded so I checked the injectors and nothing is leaking. So I pulled the plugs and sure enough, soaked in gas, so I gapped them and checked spark and all of them had strong spark.
Put them in and it kind of ran but sounded like I was missing a cylinder, pulled the injector plugs off one by one and the right to made no difference in the idle. Drove it last night and it seemed to be just fine. So I was thinking the ecu was slowly going out but not sire.