I am a new owner and am curious if there are any performance mods that I can add that will not invalidate my warranty. If anyone has any good advise I'd like to know the part, it's function, and what effects it has on the car both negative and positive.

 

C350 or C320*?

 

C350

 

K&N air filters, ECU, exhaust.

 

I should have been more specific, I'm familiar with the air in, air out, keep it cold concepts but what I am looking for is what kind of exhaust, intake channel upgrades and so on. Thanks for the response though.

 

Eisenmann exhaust is available.