Hi Dan. I have never had an issue and the system has been in since January, 2008. I learned about the dyno issue above in a funny and embarrasing way. We had a dyno day. I put the car on the dyno without turning the TC off.
As can be the case on a dyno, there was some slippage. The TC kicked in but we, including me, at first did not know what was going on and I thought that I had an engine problem. Then I had one of those DUH moments where I realized what was going on and shut it off. I felt like an idiot but that happens at least once a week. LOL.