Contact us if you have any questions about unlocking the full potential of your BMW with our high-performance upgrade hybrid turbos and parts from Falcon Turbos.

Engineered Forced Induction & Exhaust Hardware for BMW 4 Series (F32, F33, F36)

The first-generation BMW F3X 4 Series manufactured between 2013-2020—encompassing the F32 Coupé, F33 Convertible, and F36 Gran Coupé—combines an aggressive, low-slung chassis with some of BMW’s most tuneable turbocharged engines. From the modular powerhouse B58 straight-six (440i) and the venerable twin-scroll N55 (435i) to the massive torque of the N57/B57 3.0L and N47/B47 2.0L diesel platforms, the tuning potential is vast. However, pushing past factory boost thresholds quickly exposes OEM hardware limits: restrictive catalytic converters/DPFs, thermal soak in the charge cooler cores, and compressor wheel choke.

Our curated performance catalogue directly eliminates these flow and thermal bottlenecks:

• Billet Hybrid Turbochargers: Engineered with 5-to-7-axis CNC-machined lightweight billet compressor wheels, oversized exhaust turbines, and 360-degree motorsport thrust bearings. Whether upgrading a single-scroll B58/N55 to hold peak boost past 6,000 RPM or squeezing maximum torque from an N57/B57 diesel, these direct bolt-on units fit original manifold footprints and retain OEM oil and coolant feeds.

• Direct-Fit Stepped Bar-and-Plate Intercoolers: Successive pulls quickly saturate standard air-to-air charge coolers on N55, N47, B47, and N57 engines. Our stepped front-mount intercoolers (FMIC) offer up to an 85% increase in core volume and frontal face area, dropping Intake Air Temperatures (IATs) to prevent the DME from pulling timing. (Note: For the water-to-air charge-cooled B58 engine, explore our uprated front-mount modular heat exchangers.)

• Mandrel-Bent T304 Stainless Downpipes (Decat & Sports-Cat): Eliminate the dense primary catalytic converter or particulate filter right off the turbo hot-side. Fabricated from 3-inch, 3.5-inch, and stepped 4.5-to-3.5-inch T304 stainless steel with precision TIG welds, our downpipes slash turbine backpressure, drop Exhaust Gas Temperatures (EGTs) by up to 150°C, and accelerate turbo spool by up to 400 RPM.

4 Series Engine Platform Breakdown

• BMW B58 3.0L Petrol (440i / 440i xDrive): Free up exhaust flow with 4.5-inch to 3.5-inch downpipes and unlock 550 to 650+ bhp with our bolt-on Stage 3 billet hybrid turbochargers.

• BMW N55 3.0L Petrol (435i / 435i xDrive): Resolve factory boost taper and charge-air heat soak using a high-flow downpipe, direct-fit 6.5-inch or 7.5-inch stepped FMIC, and an uprated hybrid turbocharger.

• BMW N57 & B57 3.0L Diesel (430d, 435d xDrive): Unleash up to 800+ Nm of torque. Mandrel-bent decat/DPF-delete downpipes and high-pressure hybrid turbos dramatically lower operating EGTs under sustained load.

• BMW N47 & B47 2.0L Diesel (418d, 420d, 425d): Sharpen low-end throttle response and broaden the mid-range powerband with direct-fit hybrid turbos and high-flow downpipes that eliminate factory lag.

Chassis Fitment & Drivetrain Clearance

• F32 Coupé & F36 Gran Coupé: Feature identical front-end engine bays and transmission tunnels. All downpipes, intercoolers, and hybrid turbos install as bolt-on hardware with standard hand tools.

• F33 Convertible Underbody Bracing: The F33 chassis uses additional underbody structural cross-bracing. Our downpipes and cat-back adapter pipes are engineered with specific radius clearances to prevent vibration and contact against these support braces under hard acceleration.

• sDrive (RWD) vs. xDrive: Petrol downpipes are engineered to clear both drivetrain setups. For diesel applications, ensure you select the xDrive-compatible variant to clear the front differential and axle assembly.

Frequently Asked Questions

What hardware is mandatory for a Stage 2 ECU tune on a BMW 4 Series?

A high-flow downpipe (200-cell sports-cat or catless) is essential across all petrol and diesel engines to lower turbine backpressure. For N55, N47, B47, and N57 models, an upgraded stepped front-mount intercooler (FMIC) is required to stop thermal saturation. B58 platforms require an upgraded front heat exchanger for sustained performance.

Are F30 3 Series and F32/F33/F36 4 Series performance parts interchangeable?

Yes. The front-end chassis architecture, engine bays, and exhaust tunnels are mechanically identical between the F30 and F32/F36 for equivalent engine codes (e.g., F30 340i downpipes and intercoolers directly fit the F32 440i). The F33 Convertible requires checking underbody brace clearance on cat-back sections.

Will an aftermarket downpipe cause an engine management light (EML)?

Catless downpipes and some sports cats will trigger a secondary O2 sensor catalyst efficiency warning (P0420/P0430). Post-2018 vehicles equipped with OPF/GPF will also flag pressure sensor codes. An appropriate Stage 2 ECU calibration or emulator harness is required to clear dash warning lights.