S&MMBX2

Well not only am I a new member here, I'm the owner of a new 2014 C350 Sport sedan. Are there any performance upgrades for this car or the M276 engine that won't kill the warranty? I've put in a K&N filter and had a Magnaflow X-pipe installed already, but that was mostly for the sound only since neither of those is really a performance upgrade. I know I could add a tune if anyone is offering one for this car, but I'm not sure it'll be covered unless it's from Brabus or Renntech and I haven't seen anything on their websites about the C350. Ideas anyone?

JaredP

That's it unfortunately. Which is pretty typical for anything naturally aspirated.

S&MMBX2

That's what I assumed, although it never hurts to ask around. I guess I'll stay on the lookout until the warranty runs out. After that it's a turbo setup to really open things up...

edgalang

There's a tune, although I personally would not do this unless I could have it done in person at a local shop. Personally I'm waiting for headers. As for the K&N filter...did you happen to get this one?

K&N 33-2985

I'm due for a 40k mile service and it would seem as I'm also due for an engine air filter replacement.

S&MMBX2

That's the K&N I got. It and the X-pipe I put in are the only two mods thus far. No real performance gains that I can feel while driving but the car sounds a little more aggressive.

edgalang

Did you replace the filter yourself? If so, what did you do with the 2nd filter immediately after the main one?

S&MMBX2

I did replace it myself. I didn't see a secondary filter when I pulled the main factory one. I don't believe there is one as I don't see any place in the intake ducting that would allow for one. If there is however, it's still in place.