i drove to kentucky on wednesday and thursday, i took my time and had no issues at all with the car. on the trip back i took a much more mountainous route than on the way there. i didnt have any problems immediately, but a couple of hours later when i was pulling in to nashville i encounterd some traffic so i went ot downshift and while the clutch was engaged the rpms jumped into the 4Ks. i pulled off the road, restarted and the while the problem was still there it would only raise to a more managable 2K rpm. does anyone know what this could be, i havent done any performance stuff in the last couple of weeks...