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Lighter than OE system
The latest version of ECUtek also provides additional functionality
Each set is supplied pre-gapped by mountune to optimise the setting and allow for easier end-user installation
This product allows the discerning Puma owner to add a touch of mountune to their car
Cat Back Exhaust [Mk7 Fiesta ST] Pistons Lighter than OE systemThe mountune Cat Back Exhaust for mk7 Fiesta ST reduces back pressure and improves performance, whilst keeping cabin intrusion boom to a minimum. Designed and developed in the UK, mountune's cat back exhaust utilises a Helmholtz chamber design in the rear silencer. This helps cancel out unwanted frequencies due to the way in which the exhaust gas waves are reflected. Despite being more complicated and therefore expensive to manufacture, this design