I know there are probably loads of posts on this, but I'm thinking of upgrading my Z4M exhausts for something that sounds more meaty. For the novice who doesn't know what headers etc are, what are the best upgrades around £1000 or £2000 and how does one go about getting them done?
For those that have upgraded their exhausts, does it sound much better?
Has it increased your premium much?
For those that have upgraded their exhausts, does it sound much better?
Has it increased your premium much?