Ok I am still waiting for my borla cat back system and am thinking of also geting a test pipe.
Now would that make my car get a cell?
Also what pipe should I get I only see a euro code and a Lebree?
I have a B6 and a list of what I have for mods are in my sig. If thats eney help.

 

it will throw a cel. it will give you a few hundred rpms faster spool time. i personally think the e-code is better because its not changing size, so the gases arent accelerating then being jammed down a smaller pipe... others may think differently