Tubi Style- Say Whatttt, The ? Has been answered for the 991-GT3. The sound is crazy unexplainable. Call Tom at Champion.

 

The way it should come from the factory.....

 

Just went for a Sunday drive, i believe an extra 25. Horses have been let out of the stable!! Its definitely faster than before, maybe its the extra noise, but i can tell by how hard it pins me back in the seat, punched it at 70mph, dropped from 7 to 3 and i couldn't move my head and body!! So i will bet their has been a HP improvement. I have never driven a Formula 1 car, and probably never will, but this 991-GT3 with the Tubi straight exhaust sure gets me really close. Thank You Porsche!! Worth every penny!!