AP also said that 520 hp for the RS were +530...in that case 530 - 20 for the filter is 510. And 10 hp is easier to gain with ECU mapping...

Anyway I never saw real difference on the straights this year between my .2 GT3 and the .2 RSs ... to tell the truth it happened more than once me to be slightly faster probability due to areo (but slightly shorter ratios on the RS should balance that).

In the corners another story : )