Well yesterday we spent 3 and a half hours on the dyno with wideband. It took forever but we finally got the air/fuel looking really well. We gained a lot of power and it seems a lot stronger but the SES light came on today. I pulled these 4 codes off of the car: P0300=random/multiple cylinder misfire, P1133=man. controlled fuel & air metering, P0135=02 sensor heater circuit malfunction (bank 1/sensor 1), and P0174=system too lean bank 2.

What in the world is going on with the car now? I don't see why it is throwing all the codes. Even though the car smells very rich it still runs it's *** off even with the screwed up POS FAST throttle body. I'm clueless!!