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

Engineered for BMW M3 G80 and M4 G82 owners, this Behind-Grille Carbon Fiber Cold Air Intake System draws clean, 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 entirely with a Prepreg carbon fiber tube + integrated filter housing.

If you're building a serious BMW M3 G80 tuning or M4 G82 modification project and want an OBD-friendly airflow upgrade on S58, the behind-grille CAI is the ideal option. 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

• Prepreg Carbon Fiber: Autoclave-cured dry carbon tube and filter housing — light, strong, show-quality.
• 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 behind-grille 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: Prepreg Carbon Fiber (2x2 Twill)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave 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 intake tube + filter housing 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 carbon surface with pH-neutral car shampoo; apply carbon-safe sealant every 6 months.

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.

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.