CSF “No Limit” Billet Air-to-Air Competition Intake Manifold

The CSF “No Limit” Billet Air-to-Air Competition Intake Manifold (CSF8402) is purpose-built for S58-powered BMW M2 G87, M3 G80/G81, and M4 G82/G83 platforms aiming well beyond the factory performance envelope. Developed with elite drag racing teams and proven in the heat of TX2K 2026, this manifold is designed for builds targeting 1500+ WHP where conventional charge-cooled manifolds become a limitation.

By relocating the charge cooling to a front-mounted intercooler, the CSF “No Limit” manifold removes the small, integrated charge-cooler core found in OEM-style manifolds. This opens the door for significantly larger air-to-air or air-to-water intercooler cores, improved charge temperature control, and more stable performance at very high boost and power levels.

Designed and manufactured in collaboration with Custom Plenum Creations (CPC) in Australia, the manifold is fully CNC-machined from solid 6061 billet aluminium. Internal CFD-optimised velocity stacks, an enlarged throttle body flange, and carefully tuned plenum volume work together to deliver even cylinder distribution, excellent top-end flow, and the strength required for 100+ PSI boost environments.

On track, this manifold has already proven itself on some of the quickest S58 builds in the world. At TX2K 2026 it was used on the world-record holding Tom Wrigley Performance G80 M3 (7.67s @ 183mph) and GTP Motorsport’s G87 M2 and G82 M4, both breaking into the 7-second quarter mile bracket while retaining street-focused features such as air conditioning.

The CSF8402 S58 version adds track-focused detail refinements including a billet oil filter housing adaptor for service access, modular ports for additional injection or sensors, and CSF’s proprietary Thermal Rejection Manifold Spacer to combat heat soak. With provisions for up to 12 injectors, nitrous, methanol or water injection, this manifold is an ideal foundation for serious competition builds where there are effectively no limits on power targets.

Note: This manifold is intended for motorsport use only and requires extensive custom fabrication and supporting modifications for installation. Professional installation and tuning are strongly recommended.

• Proven on world-record S58 builds
  Used on Tom Wrigley Performance’s world-record G80 M3 (7.67s @ 183mph) and GTP Motorsport’s 7-second G87 M2 and G82 M4 at TX2K 2026, demonstrating stability and performance in 32°C+ ambient conditions.
• Removes the OEM charge-cooler limitation
  Deletes the integrated charge cooler from the manifold, allowing a much larger front-mounted air-to-air or air-to-water intercooler core and improved charge temperature control at high boost.
• Fully CNC-machined 6061 billet aluminium construction
  Milled from solid 6061 billet aluminium by CPC in Australia for exceptional strength, dimensional stability, and durability at 1500+ HP and 100+ PSI boost.
• Optimised airflow and cylinder balance
  CFD-developed plenum and internal velocity stacks promote smooth, even airflow across all cylinders, helping to avoid distribution issues that can limit top-end power or compromise reliability.
• Larger 77mm S55 throttle body compatibility
  Throttle body flange is designed for the larger 77mm S55 throttle body, offering more airflow capacity than the factory B58/S58 67–68mm units. Compatible with VTT-FAB B58/S58 to S55 throttle body extension harnesses (recommended).
• Extensive sensor and vacuum provisions
  Two integrated sensor pads and multiple ports (OEM TMAP, 1/4" NPT and 1/8" NPT) provide flexibility for logging additional parameters, boost reference, and auxiliary systems on advanced builds.
• Race-ready fuel and injection flexibility
  Supplied with a billet top-feed fuel rail for 6 injectors and modular runner ports that can be used for secondary port injection (up to 12 injectors with optional second rail), nitrous, methanol or water injection.
• Thermal Rejection Manifold Spacer
  CSF’s proprietary spacer reduces manifold temperature by up to 15%, helping lower IATs, improving intercooler efficiency, and resisting heat soak during repeated passes.
• High-pressure, leak-free design
  High-pressure o-ring sealed joints throughout the manifold ensure an airtight seal under 100+ PSI boost and potential backfires, reducing the risk of boost leaks on high-power setups.
• Motorsport-ready packaging
  Includes hardware and a detailed installation kit with diagrams and bill of materials, along with S58-specific details such as a billet oil filter housing adaptor for easier servicing with the manifold installed.
• Custom finish options
  Delivered in raw billet aluminium and suitable for custom powder coat, Cerakote, or anodised finishes to match your engine bay and build style.

• Application
  BMW M2 G87 / M3 G80 G81 / M4 G82 G83 with S58 engine
  CSF Part Number: CSF8402
• Construction & Material
  Material: 6061 billet aluminium
  Manufacturing: Fully CNC-machined plenum and runners
  Origin: Manufactured by Custom Plenum Creations (CPC), Australia
  Finish: Raw billet aluminium (ready for coating/anodising)
• Design & Flow
  Configuration: Air-to-air competition intake manifold (no integrated charge cooler)
  Plenum: Optimised volume and inlet angle for high-flow S58 applications
  Runners: CFD-validated runners with internal velocity stacks for even cylinder distribution
  Boost Capability: High-pressure o-ring sealed design rated for 100+ PSI (7+ bar)
• Throttle Body & Induction
  Throttle Body Compatibility: S55 77mm throttle body (BMW PN 13-54-7-597-871)
  Recommended Harness: VTT-FAB B58/S58 to S55 throttle body extension harness (not included)
  Intercooler Compatibility: Supports front-mounted air-to-air or air-to-water intercooler systems
• Fuel & Injection Provisions
  Primary Fuel Rail: Included billet top-feed fuel rail for 6 injectors
  Port Injection Capacity: Up to 12 injectors with optional second fuel rail (CSF8404, sold separately)
  Runner Ports: Modular ports on top of each cylinder runner
  Optional Nitro/Meth Kit: Individual runner nitrous/methanol adaptor kit (CSF8403, sold separately)
  Fuel Rail Fittings: -8 ORB fitting, suitable for return or returnless setups (with appropriate system design)
• Sensors & Ports
  Integrated Sensor Pads: 2
  Ports Included: 1 x OEM TMAP port, 2 x 1/4" NPT ports, 4 x 1/8" NPT ports
  Use Cases: Additional sensors, boost reference, vacuum sources, nitrous/methanol/water injection control
• Thermal Management
  Spacer: CSF proprietary Thermal Rejection Manifold Spacer
  Benefit: Proven to reduce intake manifold temperature by up to 15%, aiding lower IAT and reducing heat soak
• S58-Specific Details
  Oil Filter Access: Includes billet oil filter housing adaptor to allow filter service without removing the manifold
  Inlet Angle: Plenum inlet optimised for easier custom intercooler pipe routing in S58 engine bays
• Performance Benchmark (Reference Setups)
  Tom Wrigley Performance G80 M3: 7.67s @ 183mph, ~1650 WHP, large Precision Turbo, custom A2W (dual CSF 8084 cores) into CSF8402 manifold
  GTP G87 M2 xDrive: 7.84s @ 178mph, Precision Turbo, custom A2A intercooler into CSF8402 manifold
  GTP G82 M4 (@s58NYC): 7.99s @ 180mph, Precision Turbo, custom A2A intercooler into CSF8402 manifold
• Included Hardware
  Seals: High-pressure o-rings throughout manifold interfaces
  Installation: Hardware and installation kit with diagrams and BOM
• Use & Installation
  Intended Use: Motorsport and competition use only
  Installation: Requires extensive custom fabrication (intercooler, piping, tuning, supporting mods). Professional installation strongly recommended.

• CSF “No Limit” Billet Air-to-Air Competition Intake Manifold – S58 (CSF8402)
• Billet top-feed fuel rail for 6-injector port injection setup
• 6 x injector block-off plugs (for unused secondary injector positions)
• CSF Thermal Rejection Manifold Spacer
• Billet oil filter housing adaptor (S58-specific)
• High-pressure o-ring seals for manifold interfaces
• Complete hardware and installation kit with picture diagrams and bill of materials

Optional add-ons (sold separately):

• CSF8403 Nitrous Jet Fitting Adaptor Plug Kit (6 x runner adaptor plugs)
• CSF8404 Second Fuel Rail Kit for dual (12-injector) port injection