Quote:
edz61 said:
Quote:
STRADALE said:
Plenum increases on a C2S:

http://www.europeancarweb.com/tech/epcp_0709_porsche_977_carrera_s/index.html



18 H.P. Gain at the wheel for the 997S is pretty good. This translates to 25-30 H.P. at the crank perhaps. The article says 11 H.P. gain for the Cargraphic exhuast at the wheel.

How many horsepower do you think you get with your Tubi?



Around 30 Crank HP..