BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17

BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17Our 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 material will ensure that your Cat Back system

The free flowing 3” pipework and optimised exhaust technology opens up huge potential for M4 owners looking to increase power whilst also obtaining a pitch perfect exhaust tone"

The new quad exit Cobra Sport exhaust for the 430D is finished with a pair of specially designed twin 3” (76

This dramatic improvement in injector technology is coupled with a new WMI pump design that is 100% waterproof

Fitment is for motorsport and off road use only

7bhp ’46 degrees is a close limit before ECU starts retarding timing to keep the engine safe

the sound is amplified to deliver a thrilling

000 RPM: Normal mode: 93dB / Sport mode: 100dB

Test Results:

Sound example of the closely related BMW 435D Exhaust (Quad Exit Rear Exhaust)

removing any restriction and its function as a noise-canceling device

including a synergistic blend of three esters combined with the latest additive technology for maximum performance

independent testing has revealed that the 3” Turbo back upgrade with a re-map produces over a 20% increase in BHP