http://shop.evolve-technik.com/produ...-x5m-downpipes
Manhart, GThaus, ER are releasing theirs soon.
Out of all the options above, I believe ER would be the lowest price. Their craftsmanship is top notch.
Keep in mind you will need an ECU flash. ESS has a flash for Catless DPs.
There is no sense of running high flow catted after market DPs, as both catted and catless options would risk a warranty claim related to the drivetrain. So that being said, if you're going to play, play all the way.
