Hi, I recently bought myself a new 2017 Lancer black edition the other day.
I was wondering if there is any modifications I can add to it(for example a cold air intake or new muffler) that will give it an increase in horsepower and won't void the warranty?
Also I was wondering of any changes to the body(spoiler or body kit) would void the warranty?

Sorry if these are stupid questions. I'm very new to all this.

Thanks