Originally Posted by ArmyBimmerDude
Or the noise and other negatives that come with them
and listen to the sound clips of catless with stock exhaust. Very good sound in most peoples opinion....
There is no smell issue...?
In regards to the CEL WE still haven't gotton one however there are ways around it even with catless and no tune for it. But most of you have Procede and would have the SIM with the map to avoid it all togeather.