Which down pipe will fit a COBB tuning catback? It looks like a 3". More so I am worried that what I may buy won't end up matching. I was looking through the classifieds, and didn't want to end up buying something that wouldn't fit. Thanks.

 

I would say most aftermarket ones will bolt right up.....i think the only one you might have issues with is the cusco dp but dont quote me i just remember reading it here somewhere

 

go with the helix downpipe, they pretty much fit any catback with 3" piping and helix makes one of the best after-market downpipes out there, especially for the price.

great bang for your buck solution!

 

go with what ya know. HKS doesn't have the bell mouth design but still flows better than stock and is cheaper than most aftermarket. hey did you fix your idle stumble and hesitation problem?

 

Hey ralli me, I so far replaced my plugs, fuel filter, and yesterday my fuel pressure regulator. I have no idle problems, never did. But I still have the stumle as I am on boost, have no idea what else to check. I tried spraying WD 40 all aroung the vacum lines as instructed by a friend, and still nothing. I like my Subie, but I am having no luck figuring her out. Help!!!!!!