Quote:
Originally Posted by tibra1
I have had full catless 335..full catless VWs..full catless Mitsubishis..are you gonna tell me there is something inherently different on the M3?..Is it not an internal combustion engine with exhaust emissions  ..you are misleading the OP by saying there is no smell by removing primary cats..and what may be no smell to you maybe a smell to others there is some subjectivity there...but to say there is no smell is "coooough" bullshit |
The oem x pipe has 4 cats. 2 400 cell and 2 200 cell.
Primary cat delete refers to the primary 400 cell cats.
The system in this configuation cannt be compared to a fully catless setup on any car.