5s-fe engine problem, i have a problem with something in my engine Options

[unionbay101]

so ok as im crusin around town i noticed that my engine light just turned on and for the last couple of days i have been noticing that the engine is sputtering around 3400-4000 rpm in second and third gear ...so im thinking its the oil that needs to be changed but im not sure if its just that...because im loosing alot of horsepower i smash the gas and i can barly notice a difference in speed so if someone can help me out with this i have a gt 95 with a 5s-fe engine any help would be much appreciated thanks![b]

[Sinyk]

I had something similar happen to me today. I was driving home from work and then on came the check engine light out of the blue. My car was running fine before and was running fine after, but it was a rainy day and with my CAI I immediately thought I sucked up some water. I got in there and checked the filter and it seemed dry, if anything, a couple drops of water had hit it. I disconnected the filter and ran the engine at home and everything seemed normal, but the light was still on. Ideas? (all fluid levels checked out and I have no leaks that I can see)