If so, which ones and why did you choose them?

Im seeing BMC and K&N ...

Is one preferred over another on these cars?

Thanks.

Trying to revive this forum... Lol.

I pm'd the seller. Looks like there's a ton of data to back this kit up .
Makes sense to me as well

Thanks for this Aries.. I recently bought a 2014 CLS550 and I was looking for the same info. I found the video below on a Nissan G37 stock vs. the K&N and according to this guy's dyno test, he saw about 7 HP and 6 ft-lbs of torque through most of the RPM range and peak was higher. Not the same car, obviously.. but I was wondering if there would really be any at all. I'll probably give the K&N a shot. I'll wait until the warranty expires before I start adding anything else (cough couch Renntech ECU cough cough).

-DC