BMW M3 Saloon and BMW M4 Coupé Performance Exhaust System
2014 and later BMW M Division cars get Milltek Sport performance exhaust systems
Milltek Sport has released details of its hand-finished stainless steel exhaust system for BMW’s range-topping M4 coupe and M3 saloon pairing. As the two must-have tuner cars of the moment, Milltek has taken many weeks and months of focussed R&D time to perfect a system that balances looks, power and a sublime soundtrack in an attractive package.
Having already created several solutions for other recently released M-powered cars, Milltek’s engineers already have enviable experience in getting the best from Munich’s finest power-plants. Therefore, this new system uses the existing and well-proven EC approved cat back technology, but with the added functionality of Milltek’s latest valve technology, utilising OE spec BMW electronic valves in its construction – still controlled via the factory command systems.
In fact, these intelligent new valves have been designed to seamlessly integrate with the car’s central electronics, enabling a more sporty and aggressive tone when either “Sport” or “Sport Plus” modes are selected, but when the vehicle is left in “Comfort” or “Eco Pro” modes, a more subtle and OEM-esque note is produced, making for sophisticated and refined cruising comfort, even at high speed.
For those looking for OEM levels of legality, an E-mark stamped fitment offers a hand-finished and EC-approved centre silencer, or for those looking for a more purposeful note, a selection of ‘Race’ systems are available which feature a more distinctively toned centre silencer box. While still refined and useable every day, these upgrades are certainly the option for those really looking to accentuate the M3/M4’s superb engine note.
The new system has been designed around carefully optimised dual 70mm pipework which features a thoughtfully calculated 1.2mm wall thickness to ensure minimal weight. Each system is hand finished from aerospace grade, non-magnetic stainless-steel pipework, which in testing, offered the best balance between flow and back pressure for maximum throttle response. Tips wise, the tastefully-styled GT90 tips perfectly fill either car’s rear valance and are available in either polished or Cerakote black finishes.
Sport catalyst and cat-delete downpipe options are planned for release in early 2016.