I believe that rotational idle is mainly tied in with antilag. On the link it will be on rotational idle until you blip above 4,000rpm when it enables antilag. I'm not sure how autronics work though. Rotational on mine does cause the car to shake a little, as its not a very "balanced" way of revving the engine.

I dunno if you know what rotational sounds like, but its its a "broom-broom-broom-broom" kinda noise, like someone is revving their car and backing off constantly. Could be that.

yer i think it is.. i reved it when i was in the garage but only up to 3g and when it dropd back to 1g it back fired harder than usual lol...im running stock td04 so it aint good for it lol....thanks people

Secret antilag. Sweet......

Maybe thats why you see all the Hyundai Excels going around with the foglights on - Secret Hyundai antilag.

bwahahaha bloody excels, i always drag em