Milltek Particulate Filter-back System - BMW X3M | X3M Competition | X4M | X4M Competition (LCI) Tailpipe Finish:JET-115 Carbon Trims Removes the transmission's internal torque

Removes the transmission's internal torque limiters

Please see below video of our E92 M3 on the dyno and the difference fresh spark plugs can make

Each exhaust has specifically tuned geometries and internals to match different engine specifications

The end result is a 30d which is significantly faster to accelerate and smoother to drive while at the same time returning 10-15% improved fuel economy

Milltek Particulate Filter-back System - BMW X3M | X3M Competition | X4M | X4M Competition (LCI) Tailpipe Finish:JET-115 Carbon Trims Removes the transmission's internal torqueOPF GPF Back, Requires OE System to be Cut ECE Approved 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