Bespoke M TwinPower Turbo technology
A bespoke version of M TwinPower Turbo technology includes two mono-scroll turbochargers that supply compressed air to cylinders 1–3 and 4–6 respectively. An indirect intercooler optimises the power output of the charger and its electronically controlled wastegate supports the turbochargers’ instantaneous responsiveness and heightens the effectiveness of the catalytic converters.
Other elements of M TwinPower Turbo technology include VALVETRONIC variable valve timing and Double-VANOS variable camshaft timing. Both models meet the Euro 6d exhaust emissions standard.
Cooling system and oil supply designed for track use
The new BMW M3 Competition Saloon and new BMW M4 Competition Coupé use a bespoke cooling system to ensure an optimal operating temperature in all conditions. It includes a low-temperature system that contributes to cooling the intercooler and a high-temperature system that cools the engine block and the two turbochargers.
Meanwhile, the oil supply system has also been designed to meet the challenges of dynamic track driving. The engine’s weight-minimised oil sump has two separate chambers and an integrated suction channel, while the additional suction stage allows the map-controlled oil pump to draw lubricant from the smaller chamber when extra capacity is needed.
Exhaust system with electrically controlled flaps delivers a distinctive soundtrack
A dual-branch exhaust system reduces back pressure, but also produces a fantastic soundtrack. It leads into a high-capacity rear silencer with a quartet of tailpipes finished in Black Chrome. Electrically controlled, fully adjustable flaps suppress intrusive frequency ranges, increasing comfort levels while the sound is also influenced by the engine mode selected - the driver can choose either SPORT or SPORT+ mode using the relevant button on the centre console. It is also possible to alter the engine’s aural impact using the M Sound Control button on the centre console.?