TC is a bit odd, if you are a very good driver and can straighten your car out...not necessary. But if you arnt hitting the exits well then I find that tc helps me get on the gas earlier, albeit it not with as much power as I would like. I guess with srf off , it is like a crutch for me. I mean in a striaght line it makes no diff, only in the turnswhere it protectsme against my heavy finger anyhow. For sure it makes you faster though,,,in the right hands
suggested gears...wow they are usually so off. esp downshifting