The difference is in both the new DP and the cooler weather. Unless Mark loaded another tune without telling me the tune that is on there at the moment is the same one that I ran the first time at WSID (it was loaded the same day) and also the same one that I ran at the dyno day. On the dyno at TurboXS it makes 201kw at the wheels vs 181kw with the APR DP. You may have seen the back and forth between Guy and me in the tuning thread about whether the different DP can really make that much difference. Time slip says it does because there is no way 10 degrees cooler air is going to make that much otherwise Ferret would have been even quicker than me.