I have a 2007 Saab 9-3 convertible (150hp model) which I've had a few months and am happy with it.
Been looking into these common rail mods such as this [Only registered and activated users can see links. ]
They seem to state up to 20% more fuel effiency and quite an increase in power. Are these safe to use? Anyone got any real world experiences of these boxes and their performance (both fuel saving and speed).