[SvXSubaru92]

Well.....I cleaned the spark plugs throughly about a week ago, and replaced a coil that was bad, car started. I was keeping the rpm's over 2000 to get rid of all the fuel in the cylinder, it smoked for 5 minutes, then cleared up. I took it for a drive, It still has absolutly no acceleration, and a o2 sensor code came up.

My dad took it for a longer drive today, and the exhaust turned RED HOT! from the headers to tailpipes, they were red. They engine wasn't overheating. But HOW?! Could it be a clogged cat? muffler? To much fuel? I'm still amazed, I've never heard, seen something like this. Help me out. Thanks