I have left the stock blower in place (I have a new turbo that will be going in with AET for some hybrid work) and just messed about in other areas capping it at 300bhp and 340lbft of torque, but ditching over 100kg had made a significant difference all round and 6 alcon extreme calipers and 365mm discs help on the braking front for track use. On track my opc would show it's rear to my 1M but with the work and weight that would be expected, straight line speed would show a different result though.
