I can tell you, for sure that the " Tubi " system is being developed for 997.2; and should be super ! The new 997's are really quiet, and need some more tone, quality; for sure ....... The new 997's exhaust system is totallly different, with cat's on the end of the headers; like a collector. There is a  pipe that conects both mufflers, that was never there, before. The mufflers themselves are new , also. I have a very strong feeling that there will be large power and response gains with the new " Tubi " system ! It's probably a couple months away. You might want to wait for it !

Revvv   Smiley    Smiley                www.championmotorsport.com