I had a brant on my STI, obviously, and I never had a single issue with it. I had 'anti-hijack' turned off, so I could get in and out of the car as I pleased. But everything else was active. Altho, you wouldn't be the first to say you're having problems. I know of a couple of people who have had brant cut their cars out, which causes the steering to lock, and the brakes to disappear, some of them at 110 on country highways... Shit your self moments there!