Hi! I recently got my new which is a 1.2 clio 03 plate and I'm just wondering if they're any possible way I can improve the sound of the engine without affecting my insurance or performance; I don't wont to make it go faster but I would just like to make it sound a bit more nicer. Is there any possible way I can do this, I was told getting an air filter can make it sound quite nice but I'm not completely sure. I have around a budget of £10 - £30. Thanks