Engineered Forced Induction & Exhaust Upgrades for the BMW 7 Series Platform

As BMW’s premier executive saloon, the 7 Series delivers effortless high-speed continent-crossing capability. Beneath the prestige bodywork lies a lineup of Munich’s most capable turbocharged powertrains: from early cast-iron M57 730d diesels and the twin-turbo N54 (740i) to the modern straight-six N57/B57 diesels (730d, 740d, 750d), the modular B58 (740i), and hot-vee N63/S63 V8 powerplants (750i).

While the factory architecture easily supports Stage 2 and Stage 3 performance levels, the sheer mass of the vehicle and the tight packaging of executive sound-deadening materials create severe thermal and backpressure choke points. Pushing power past factory limits requires eliminating restrictions directly off the turbocharger hot-side and stabilizing charge-air density:

• Billet Hybrid Turbos: Engineered using 5-to-7-axis CNC-machined lightweight extended-tip billet compressor wheels, clipped high-flow turbine shafts, and reinforced 360-degree motorsport thrust bearings. Whether upgrading the sequential multi-turbo assemblies on an N57/B57 740d or 750d to achieve sustained torque past 900 Nm, or uncorking an N55/B58 740i to sustain boost beyond 6,000 RPM (supporting 480 to 600+ bhp), these bolt-on units fit original manifold footprints and mate to OEM oil/coolant feeds.

• Direct-Fit Stepped Intercoolers & Charge-Cooler Radiators: The 7 Series engine bay retains immense heat under load. For air-to-air intercooled generations (E65, F01/F02), our stepped bar-and-plate front-mount intercoolers (FMIC) offer up to an 85% increase in core volume over restrictive OEM tube-and-fin units. For modern indirect water-to-air charge-cooled platforms (G11/G12), our high-capacity dual-pass aluminium front heat exchangers lower coolant circuit temperatures, preventing the DME/DDE from pulling timing or fuel volume during sustained high-speed pulls.

• Mandrel-Bent T304 Stainless Downpipes (Decat & Sports-Cat): Eliminate the thermal choke created by dense primary catalytic converters, DPFs, and post-2018 Gasoline Particulate Filters (GPF/OPF). Precision-bent from 3-inch, 3.5-inch, and 4-inch aircraft-grade 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-up by 300–400 RPM while maintaining executive acoustic refinement.

Select Your BMW 7 Series Generation

• BMW 7 Series E65 / E66 (2001–2008): High-torque upgrades engineered for the bulletproof M57 diesel (730d), including 3-inch decat downpipes, stepped front intercoolers, and fast-spooling hybrid turbos.

• BMW 7 Series F01 / F02 (2008–2015): Stage 2 and Stage 3 performance packages for the twin-turbo N54 and single-turbo N55 740i, alongside single, twin, and tri-turbo N57 diesel models (730d, 740d, 750d xDrive) and N63 V8 (750i).

• BMW 7 Series G11 / G12 (2015–2022): Next-generation performance downpipes, uprated charge-cooler heat exchangers, and hybrid turbos for the modular B58-powered 740i, B48 730i/740e hybrid, and quad-turbo/twin-turbo B57 diesels.

Frequently Asked Questions

What hardware is required for a Stage 2 ECU tune on a BMW 7 Series?

A high-flow sports-cat or decat/DPF-delete downpipe is essential across all petrol and diesel engines to relieve exhaust backpressure on the turbine wheel. For air-to-air intercooled models (E65, F01/F02), an upgraded stepped front-mount intercooler (FMIC) is strongly recommended. For G11/G12 models utilising water-to-air charge cooling, an upgraded front auxiliary heat exchanger prevents intake air thermal soak.

Do 7 Series downpipes fit both standard (i/d) and long-wheelbase (Li/Ld) models?

Yes. The extra wheelbase length on ‘L’ chassis models (e.g., F02, G12) is added between the B-pillar and rear axle. The front-end subframe geometry, engine bay layout, and turbo-to-downpipe connections are identical between standard and long-wheelbase variants.

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

Catless downpipes trigger secondary O2 sensor catalyst efficiency codes (P0420/P0430) on petrol platforms. On diesel models, DPF removal triggers differential pressure sensor faults; on post-2018 vehicles, OPF sensors will flag backpressure warnings. A corresponding Stage 2 ECU tune (DME/DDE calibration) or emulator module is required to disable fault tracking.

Contact us if you have any questions about unlocking the full potential of your BMW 7 Series with high-performance upgrade turbos and parts from Falcon Turbos.