My 2003 has a sputtering noise coming from the passenger side of the motor when accelerating. When in neutral (std tranny) and hitting the gas there is no noise. There is no engine light either. Also, when accelerating the sputtering does not seem to impact engine performance -- the pull seems consistent -- but it does sound like a miss-fire or overly rich mixture (from the old carb days). I'd also say an exhaust sound but it only occurs over 1200 rpm and only under load. Anyone experience this?