This was a real nail biter.Me and my wife were on are why back home from eating mmob and a see this ss coming from behind meit looked bad.So i slowed up a little and let him got beside me.Then i rev a little he looked over and gave a laugh with alook like yeah rite. That made me mad I rolled down my window a said lets run when i did he hit way before me and pulled me car from 30 to about 50. I pulled back up beside him and said lets do it from 20 he did not even look over (the guy was a flat out prick).Well he slowed down we hit it at the same time from 20 till 60 we were even. Then i started pullen away like nobodys buisness at 100 a was ot in front off about 2 till 3 cars. We stop at the next light he wouldnt even look over. I was so happy and my leg would not even stop shakin. By the way he was an 6 speed with exhaust from what i can tell.Is this good for what i got 06 a4 corsa,diablo and k&n cai?