Freak997tt

Hi guys

I noticed that Ruf , 9ff , FVD ...etc

always go with headers and camshafts after stage 2 mods ( ecu , exhaust and airfilter )

Why we dont see that with U.S tuners..Specialley with 996tt/997tt cars

Also i saw that most of them ( except 9ff ) get 600hp ( not sure if it on crank or wheels ) on 996tt and 650hp on 997tt...What's the reasons? Also are those numbers on low or on high boost?

Thanks

Sab

http://www.rsportscars.com/eng/cars/911_alzen.asp

... little more then 600hp, but also headers, cams, heads...