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The sporty sound is achieved from the accurate selection of the piping sections
Why is it important to change your BMW spark plugs
OPF/GPF Bypass System - Resonated (Quieter) - Requires OPF/GPF Bypass Module or Stage 2 ECU Software
By deleting the resonator
Front exhaust "H-Pipe" with Metallic catalytic converter
Milltek Particulate Filter-back - BMW G87 M2 (OPF/GPF Models Only) S63 The sporty sound is achievedOPF GPF Back with Centre Resonator Bypass Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality