Just wondering if using a non-bellmouth or non-divorced catless downpipe + stock 3rd cat+ 3"catback will work with cobb stage 2 map.
Or is it too restrictive for cobb? I though I read somewhere here someone is using stromung divorced downpipe + stock 3rd cat + aftermarket catback for cobb stage 2 map. But what if I use nondivorced or nonbellmouth designed for 2nd cat. Would it still work. I hope this is not confusing.

 

i got helix up and down pipes and i love it

with apexi n1 catback
i put down 218 to the wheels HP and 222 lbs or torque on ATPs dyno

from what i hear that is pretty accurate

 

Any turboback should be work, even if you use a cat.

 

Call Cobb