None reported. Dont get too obsessed about the HP power claims as the differences with good systems will not be that much and in any case its rather difficuilt to confirm such minimal differences. Another option is to get a custom made system by a specialist race shop if you are prepared to **** around for ages and experiment with it.
Anyway Im going the safe way with a Capristo system. My shop will check if the internals are up to race standard and if not, polish and coat the internal and/or externals.