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      03-11-2013, 11:27 AM   #5
Second Lieutenant

Drives: 2009 M3
Join Date: Aug 2011
Location: Pearland, TX

iTrader: (3)

What pbonsalb said, any of the major manufacturers will make a good product, the main concern would be the quality of the welds and clamps. I'm sure they're all very similar in this regard so just get the cheapest ones. I just picked up a slightly used set of MS ones last week on the forum.

As I'm sure you know, after deleting the cats the car will throw a code for increased emissions. You can purchase something like the akra delete-r which will just remove the code, or you can go with a full ECU tune. Check out this link:

You can get the best of both worlds and probably gain >30 hp to the wheels