Eventuri BMW S54 E46 M3 CSL Carbon Fibre Airbox
Status: This Eventuri BMW E46 M3 CSL carbon fibre airbox is discontinued indefinitely. If you want the same legendary CSL intake sound and performance response on your S54, we recommend the Eventuri BMW E46 M3 carbon performance intake as the ideal alternative.
Built for the iconic BMW E46 M3 S54 engine, this CSL style carbon fibre airbox delivers the authentic CSL induction roar, sharper throttle response, and a motorsport-grade finish that transforms every drive. Eventuri developed this carbon airbox with leading motorsport manufacturing partners using 100 percent pre-preg carbon fibre to achieve OEM-level fitment and durability with a true CSL experience. The result is a premium E46 M3 CSL carbon air box that is revered for its sound quality and driving feel.
At Nforcd we have fitted Eventuri systems for E46 M3 customers and the feedback is consistently positive - crisper throttle, smoother power delivery and that addictive CSL intake sound under load. Daily driving manners remain civilised at idle and part throttle, with the signature induction note arriving only when you ask for it.
Why choose this E46 M3 CSL carbon fibre airbox
- Authentic CSL induction sound for the S54 - the definitive E46 M3 intake noise
- Premium 100 percent pre-preg carbon fibre construction with motorsport-grade quality
- Designed to work with Alpha-N MAFless ECU calibration for smooth, factory-like drivability
- Improved throttle response and airflow on the BMW S54 engine
- Refined acoustics - quiet at idle and part throttle, exhilarating under heavy load
- Precise fitment for BMW E46 M3 models, manual and SMG
ECU remapping strategy - Alpha-N MAFless calibration
Optimised to run with an Alpha-N MAFless ECU calibration that removes the air mass sensor and reconfigures the ECU to suit the increased airflow of the CSL airbox. Maps adjusted include:
- Full throttle fuel
- Full throttle ignition aim
- Part throttle ignition aim
- Minimum ignition set
- Torque calculation
- Speed limiter removed 250 km/h
- Dyno rpm limiter removed factory 6300 rpm setting
- Sport button memory enabled
- Normal and sport throttle maps refined for smoother driving
- VANOS intake and exhaust optimisation
- Throttle opening maps to achieve 100 percent opening
Compatibility
BMW E46 M3 with S54 engine. Suitable for manual and SMG models.
Additional parts required sold separately
- IAT Sensor - 13621725324
Manual:
- Brake Air Valve - 11617833647
- Breather Hose - 11157833649
SMG:
- SMG Reservoir Bottle - 21532282549
- SMG Reservoir Bottle Bracket - 41147896136
Fitting and support
For professional installation and Alpha-N setup, we recommend booking fitting with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com and our team will guide you through parts, coding and setup for your BMW E46 M3 S54.
Compatibility check
We verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout and we will confirm compatibility for your E46 M3.
Part number
EVE-E46-ABX
Manufacturer and warranty
Manufactured by Eventuri. Supplied with a one year Eventuri warranty.
Search-friendly summary
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