on a trip recently I finally got a dyno run done...I got 227.6kw @all 4 on 15psi but on the bad side I needed to gap my plugs from 1.1mm to 0.8mm which I didn't have time to do so until I go on holiday again or something you'll have to take my word that the expected figure at about 18 or 19psi (due to steel wheels) was said to be about 240-250 kw @all 4.