BMW M3 G80 / M4 G82 Silicone Behind-Grille Cold Air Intake System

Engineered for BMW M3 G80 and M4 G82 owners, this Behind-Grille Silicone Hose + Carbon Tube Cold Air Intake System draws cool, high-pressure air from behind the front grille directly to the S58 turbo inlet. Manufactured in Europe and quality-controlled by BYC Performance, it replaces the OEM airbox with a high-temperature silicone hose + carbon fiber hard tube combination.

If you're building a serious BMW M3 G80 tuning or M4 G82 modification project and want an OBD-friendly airflow upgrade on S58, this behind-grille silicone CAI is built for you. It helps lower intake air temperature and reduces high-rpm airflow restriction on the new-generation S58-powered M3/M3 Touring/M4/M4 Convertible family (473 hp standard, 503 hp Competition, 543 hp CS/CSL).

Key Features

• Silicone + Carbon Combination: High-temperature 4-ply reinforced silicone hose + prepreg carbon fiber hard tube.
• Power & Torque Support (S58): Smoother high-rpm air delivery versus the stock airbox.
• Behind-Grille Routing: Pulls from the clean, cool, high-pressure region behind the front grille.
• Lower IAT: Cooler intake temperature than stock — denser air charge.
• OEM Sensor Compatible: MAF and IAT sensors mount in factory positions — no OBD codes.
• Washable Performance Filter: Cotton-gauze multi-layer filter, cleanable for lifetime use.
• Full OEM Connections: Bolts directly to turbo inlet and airbox mounting points — plug & play.

Stock Filter vs. Performance Intake — What's the Difference?

The OEM airbox uses a paper filter and narrow plastic channels — creating air starvation at high rpm on the S58. The performance intake:

• Airflow: Noticeably higher airflow than the stock airbox, especially at high rpm.
• Temperature: Lower IAT thanks to behind-grille routing.
• S58 Power: High-rpm power support from opening up the turbo inlet restriction.
• Torque: Improved mid-range torque feel.
• Filtration: Washable performance cotton-gauze filter.
• Sound: Pronounced turbo intake + dump-valve sound.

Vehicle Fitment

This BMW G80 / G82 silicone CAI fits the following models perfectly:

• BMW M3 G80 Sedan (2021, 2022, 2023, 2024, 2025, 2026) — S58 engine (473 hp)
• BMW M3 Competition G80 (2021+) — S58 (503 hp)
• BMW M3 CS G80 (2023+, limited) — S58 (543 hp)
• BMW M3 Touring G81 (2022+) — S58 (503 hp)
• BMW M4 G82 Coupé (2021+) — S58 (473/503 hp)
• BMW M4 CSL G82 (2022, limited) — S58 (543 hp)
• BMW M4 G83 Convertible (2021+) — S58
• BMW M2 G87 Coupé (2023+) — S58 (460 hp)

NOTE: The previous-generation BMW M3 F80 / M4 F82 (S55) uses a different turbo inlet and airbox layout — NOT compatible. BMW M2 F87 (S55) is also NOT compatible.

Technical Specifications

• Material: Silicone Hose + Carbon Tubes (4-ply reinforced silicone + Prepreg carbon)
• Manufacturing: Silicone extrusion + Autoclave-cured carbon
• Finish: Matte black silicone + High-gloss carbon weave
• Color: Black
• Origin: Europe

Installation Notes

1. Turn off the engine and allow it to cool.
2. Remove the OEM airbox cover and main hose.
3. Carefully label and remove the MAF and IAT sensors.
4. Install the new carbon tube + silicone hose set on OEM mounting points.
5. Attach MAF/IAT sensors to the new tube (torque: 4-6 Nm).
6. Tighten clamps (3-5 Nm) and check for air leaks.

Care & Maintenance

Wash the performance filter with cotton-gauze cleaner and re-oil every 15,000-20,000 km. Clean the silicone hose with pH-neutral car shampoo; avoid petroleum-based solvents.

FAQ

Compatible with M3 G80, M4 G82 and M2 G87?
Yes. All three share the same S58 turbo inlet and behind-grille volume.

Will this throw an OBD code?
No. The MAF and IAT sensors install in OEM positions — no error codes.

Does it require a tune?
No, it works stand-alone. A custom tune can extend the gains further.

Compatible with previous-gen F80 / F82?
No. The S55 engine uses a different turbo inlet and airbox layout.

Risk of water ingestion in rain?
No. The behind-grille volume is inside the engine bay and shielded from direct rain ingress.

Shipping time?
In-stock items ship within 1-3 business days via partner couriers.

Warranty?
BYC Performance offers a 12-month manufacturer warranty against production defects.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber and performance parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes BMW M3 G80 carbon parts, BMW M4 G82 intake systems, Audi RS carbon hoods, Porsche carbon spoilers, and many more high-quality components. All parts are produced with quality materials and undergo strict quality control.