Ok people im really getin pissed off. had a knock sensor issue with my 2002 OBS for about a month now. Replaced the knock sensor and code still pops up just not a much. But today i was driving to meet someone to pick up parts for my Subie i go to get on the highway and it was like somebody flipped a switch. I was on the on ramp and halfway thru it all of a sudden the car starts sputtering...bad. Loss of power CEL and i thought it was gonna die. I limped it to the next exit and its misfiring. I have an N1 exhaust so its not hard to miss the sound. Its driveable but its popping every now and then. Whats weird is under WOT it wont miss. but normal load the car bucks badly. Im wondering why it did it so suddenly though. The only change to the car was a CAI installed 2 days before. But it ran fine up until 2day. Im not sure whats going on. Any insight would help. Im gonna get a hold of a scan tool soon and see what codes popped up. But it sucks because its definitely misfiring but not enough to shut the car down at idle.