My Burb runs like ass since Saturday. It was running awesome then. Got it stuck, pulled it out(not really pulled, just drove) and now it runs like crap. While driving at a steady speed it surges. It sounds like there is a little puff going through the exhaust, like its misfiring a cylinder or two. Once in a while I will feed it more gas and it will smooth out and feel like I suddenly hit a 20 shot of nitrous. All I can think is ignition issue or O2 sensor. I just put in a 3 wire O2 sensor on Friday. I checked the connector and everything looked fine. Didn't check the heater portions connectors though. Think I fouled a plug? Maybe I need to pull them all and check. Really sucks cause it was really running great on Saturday. Its not too important since shes going to the yard on saturday but I'd still like to hunt it down for future reference.