I’ve heard that yellow stripe indicated as well, but my modules (upgraded) on my 2008 are not yellow. There is a noticeable increase in revs (+1800 rpm’s) a few seconds after engine start, without touching the throttle.
Kevin, where are you in Eastern NC? I’m live in Wilmington & my SC is based at ACZ. Now there are 5 SportCruiser’s around Eastern NC, the others I know of are: a Blue/White SC based at ILM, a Red/White SC based at 60J, and another Red/White SC based at MYR.