I got my g35 for a deep discount cause of the check engine light problems and this forum helped me fix it thanks all so much!
Problem: sluggish off the line, codes 0014 and 0024 and an idle speed code(i forgot it).
Investigation leads me to a recently replaced battery and an el cheapo oil change sticker.
Solution: Fresh oil change with high quality oil and filter, ran idle relearn and exhaust timing relearn procedures (check EC in your FSM directory for details)
Peppy off the line now! I've had her all of one week, look forward to many years to come. Thanks again guys and gals.