Originally Posted by
jnin
Hi guys
I am thinking of replacing my downpipe to catless downpipe (God help me from what I ve read from others who have tried it).
Can someone please tell me whats the OD/ID of the stock pipe? 2.25" or 2.75"? The downpipe that I will buy its 3" so I will need a reducer/adapter.
Thanks
Most aftermarket downpipes (ATP, COBB, etc) have flanges / gaskets that allow them to match the stock exhaust. If in doubt email the producer or the seller.
I went through the same thing with my DP: http://www.ozmpsclub.com/forum/intak...-mid-pipe.html
Last edited by DAN MPS 3; 12-03-2014 at 01:49 PM.
SG9 XT: VF34 P20, Tomei headers, STI intercooler HSD coilovers, Brembos and much more...