Interesting one this, sounds like its misfiring at 2k revs, it might be something to do with the map. Mine does the rev up to 2k on start up as well, but mine does have an unknown map on it when I bought it, so could be a case your mate's car is on a map..


As for the PAS fluid being black, its defo time for a change of fluid, my opinion is to do that sooner rather than later.