Just got a new/used 07 997 TT. It has a techart exhuast/cats. When I hit boost hard 3rd gear up I get engine rev up and clutch slip. Is the 2.5 the set up or is that over kill? Not planning on more power mods. It seems I am more power then stock TT, but not trying to push it by a lot and never will.
Who is a good supplier?

 

I find that the sachs 2.5 clutch with 764 disk holds upgraded power well, but does not drive like stock. It is noticeably more grabby and the engagement point is shorter. Adding a clutch stop makes it easier to drive, but still took me about 1,000 miles to learn how to drive as smooth as stock. Of course, just one man's opinion. I don't think there is a better option for 700lbs of torque and below