The Milltek Cat Back for R53 Cooper S from 2001-2006 comes in 3 parts and starts from the manifold back i.e. Cat(Catalytic converter) Back. It provides a Deep but slightly raspy note. Not too loud and fully road legal.
Is my exhaust system covered by a guarantee or warranty?
As long as you are the original purchaser, your cat-back exhaust system is covered by an anti-corrosion and manufacturing defect warranty. Milltek do not cover against any modifications made to there product after it has left there factory and also not for unusual use of parts - for example, the use of Nitrous Oxide, damage caused by going over speed bumps too fast etc.
Milltek warranties are offered on the understanding that the cars power maybe increased by upto 33% from its original specification. Modifications made to increase the power beyond this will render the warranty void.
Price of fitting cost is correct if there is no snap bolts or broken rubbers to change.