Until my last track day at WSIR, I hadn't really noted the need to disable the brake-system based "torque vectoring" we have on our lovely FiST. In fact, I thought it was kinda cool for the street. This conversation is now about a dedicated track car. Now that I run stickier R compound tires, have the suspension more or less dialed-in with coilovers, etc., I think I've bumped into some pretty unnatural feeling stuff with this system. While I have noticed it plenty in the past, it was never weird. Now it only seems weird and steps in when I'd rather it just kept out completely! To be clear, I always run with the stability system turned off. The first time this happened, I thought it was left in "on/sport". It wasn't. I had the benefit of back-to-back sessions, with another driver. My co-driver agreed. Really, I was relieved he saw it the same way. He's the better driver, and has way more track/race time than I have (and is a Time Attack Champion with his built 350Z, but is fast in any car!). What do you guys think? I've added this to my list of stuff to do, but haven't sorted out exactly what I'll do to disable it. I'd imagine a fuse/relay removal would be the least intrusive. A brief read on the Focus forums turned up a story about "sensor removal" (and "more understeer"). I'm not worried about that. On a final note, I'll say that I've read that our system is considered a second generation version of the system that a Focus has (meaning stuff there may or may not prove useful on our FiST).