Yeah thats fair enough. I ask simply because the typical improvement of replacing just the one single cat is usually no more than an extra 15rwkw at best, and those doing just this might be wondering if its worth a retune with these kind of gains.
And likewise RAPHOON, I'll more than likely be having the twin cat, injectors and retune done within 20 feet of eachother.
Looking forward to driving out with what will seem like a new Tornado :)