alan_e550

Hi everyone, I'm getting a performance and burble tune for my 2011 e550 4matic by eurocharged. I understand you can't squeeze out much hp from the m273, however I was considering buying high flow engine air filters to allow the tuners to squeeze more power out. Would this be worth it? I've been looking at K&N and BMC however I haven't been able to find a BMC filter that fits the m273 engine. Any advice would help, thank you!