Originally Posted by Rob///M5
I'm ignorant here. The filter is strictly used for North America EPA regs and serves no other purpose? Is there any risk to the engine or turbos in removing the filter?
No risk, pull them. They're actually in here just to pass California EPA regs. Putting them in all cars makes the M5 "50 state compliant".
Current: 2013 Monte Carlo Blue F10 M5 (ED on 9/1/12), 2014 Anvil Willys Wheeler Jeep Wrangler (weekend toy)
Previous: 2009 Carbon Black E60 M5, 2006 Silverstone II E60 M5, 2003 Sterling Grey E39 M5, 2000 Anthracite E39 540i6, 1998 Jeep Grand Cherokee 5.9 Limited, 1990 Eagle Talon TSi AWD, 1978 Mazda RX-7