ya they are not legal here either!! haha but i didnt have any problems with it on my z28 after the cats either...it shouldnt great! just made the car shake alot even with it capped.... anyone any thoughts on the QTP's electronic cutout??? cause its only 179 and i see some for over 400... whats the difference?? I dont wanna buy one thats cheap and not worth it...id rather save up for the good one... and im getting mixed reviews....before or after cat?? and if before then where exactly???