I have just fitted S.E.muffs,K&N filter and factory stage one race download to my 06 FXSTI and although I have heard all about thundermax etc,I am happy with how the bike Is running appart from a little bit of popping on decel,Anyway just out of curiosity I am wondering if there is anyone out there who has put serious km's on their bike with this setup??? And whether you have had any problems??

Thanks scotty,I wasn't really worried,just curious,you are right it goes a lot better,not necessarily outright power but pulls stronger from down low,find myself changing gears a lot less,easier to use power. Just curious about long term wear on the engine with this setup,I intend on keeping the bike for the long haul.