i've had to run open headers twice due to cat's clogging, wide open i loved it, slowing down and driving around my neighbourhood was embarassing though, going through tunnels was sweet as hell and parkades

 

why was it embarrasing to slow down... what happened?

 

i'm not a big fan of the loud backfiring haha, but when you get into the throttle it sounds like your at the dragstrip all the time, the first time it happened you could hear my truck from my house all the way till i pulled into work, which was about 2km's away not all that far but to hear a vehicle for that long is pretty good

 

mine didnt sound too bad in my opinion but if you want to do dumps just do it before the cat its much better