K8 Wee. ~20k on the clock. After the valve check last year, it starts differant. All valves were mid spec, so no adjustments. i put in new plugs, new air cleaner. Other than that no changes were made. Starting, it "pops" to life, instead of normal starts with and increase of RPM then back to normal idle. My gas mileage sucks, by about 8 to 10 mpg. I can smell the catalic converter at times. I think it is running rich, but no way to varify that. Where to start to look? also seems like it lacks low end. Again thats a seat of the pants thing, so no way to varify that.