Hi, could you add more detail about your vehicle (I assume you have a 190 TDi from your profile name) and where your based, which might help you get more replies, plus have you a link to said kit (I believe ECS is an american company and I can't find details on there site for kits for TD).
I'm new to Audi, but my MK4 Golf TDi is running over 310 Ib/Ft torque and has a Black Diamond stage 2 clutch fitted (everything else is standard, no SMF here), its been fitted three years now and never slipped once. I'm thinking of putting the same in my A4 as its been remapped and is now slipping... price is GBP £370ish.
Trev.