Flight_740
04-06-2008, 02:40 PM
I need a set of catalytic converters for my BMW. I have decided on a universal set of Magnaflows because my factory converters are almost $1000.
So my question is this. If the inside diameter of my factory pipes are 2", what size in and out should I order? Should it be 2" as well or slightly larger?
So my question is this. If the inside diameter of my factory pipes are 2", what size in and out should I order? Should it be 2" as well or slightly larger?