Unlock Maximum Airflow and Cooling Efficiency with the do88 Carbon Inlet System – BMW G80/G82/G87 M2, M3, M4 (S58)

Unlock your S58’s true potential with the do88 full carbon fibre inlet system – designed to deliver maximum airflow, superior filtration, and reduced inlet temperatures for both road and track use. Engineered for tuned and high-output applications, this system eliminates OEM restrictions and ensures the turbochargers are consistently fed with cold, dense air.

Why Upgrade?

OEM Limitations

The factory BMW S58 intake system uses restrictive plastic pipes, small turbo inlets (61mm and 72mm), and limited cold-air feed paths via the lower sections of the airboxes. This creates a bottleneck, raising Intake Air Temperatures (IATs) and increasing pressure drop – both of which reduce performance and throttle response, especially in tuned cars.

The Heat Soak Problem

On track or during extended spirited driving, elevated IATs force the ECU to reduce power output to protect the engine. An enclosed intake is crucial to controlling these temperatures, but the OE design’s small volume and restricted airflow make it inefficient for high-power builds.

do88’s Solution

Fully Enclosed, High-Volume Carbon Fibre Airboxes

do88’s design uses large 7.8-inch carbon fibre airboxes, shaped to maximise internal volume while retaining clearance for CSL strut braces. These are fully sealed to isolate intake air from hot engine bay air, ensuring only cold, dense air reaches the turbos. Additional fresh air feed openings behind the headlights increase airflow volume well beyond OE capacity.

Oversized Smooth Carbon Pipes

Replacing the restrictive OE plastic, the carbon pipes start at a massive 105mm (4.1") diameter at the air filter and taper smoothly to 3.25", eliminating sharp bends and turbulence.

High-Flow, Washable Cotton Filters

Custom-designed pre-oiled cotton filters with densely woven gauze deliver outstanding filtration without choking flow. They are fully serviceable for long-term performance – recommended cleaning every 20,000 km.

Custom-Cast Aluminium Turbo Inlets

do88 replaces the OE’s restrictive turbo inlets with precision-cast aluminium pieces featuring 83mm connections, improving flow into both OE and hybrid turbos. A unique adapter sleeve system ensures compatibility with popular turbo upgrades like Pure S58 STG2+ and TTE940, while a flat-flange sealing surface guarantees a secure fit.

Proven Gains

Flow testing shows a 24% increase in airflow compared to the OE intake, alongside reduced pressure drop and improved turbo efficiency. The result is stronger mid-range torque, faster boost response, and sustained power under repeated high-load conditions.

Key Features

• Large 105mm (4.1") pre-oiled cotton filters – washable and reusable.

• Fully enclosed cold-air feed with additional headlight-mounted inlets.

• 24% more airflow over OE system.

• Smooth carbon fibre pipes with no sharp bends or restrictions.

• Custom-cast aluminium turbo inlets with 83mm connections (OE: 61mm/72mm).

• Compatible with OE and popular hybrid turbos.

• UV and heat-resistant high-gloss clearcoat finish.

• Designed for tuned engines, hybrid turbos, and big turbo kits.

Compatibility

• BMW M2 (G87) – Engine: S58 – Model Years: 2023–202X

• BMW M3 / M3 Competition / M3 CS (G80) – Engine: S58 – Model Years: 2020–202X

• BMW M4 / M4 Competition / M4 CSL (G82) – Engine: S58 – Model Years: 2020–202X