Quote:
Originally Posted by JNoSol
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. 
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Very true. It is interesting to try to figure out which mods BMW will look the other way on, and which ones they decide to put their foot down on. With coding, it's a fine line to walk. So many things they care little about, but then others put a huge red flag on your internal BMW "file" for that vehicle. The same goes with launch control, and them tracking, secretly, how many times it is used, and then deciding, down the road, if they will or will not honor a warranty claim for something that could have failed from overuse of launch control. Be it right or wrong, their lawyers word things "just so" to protect them from us, not us from them.