CSF S58 No Limit Billet Air-To-Air Competition Manifold

Purpose-Built Billet Intake Manifold for S58 Drag Racing and 1500 WHP Competition Builds

The CSF 8402 No Limit Billet Air-To-Air Competition Manifold is a purpose-built CNC-machined intake manifold for BMW S58 engines that removes the charge cooler entirely from the manifold housing. By relocating cooling duties to a larger front-mounted intercooler, it breaks through the 1500 WHP ceiling that drop-in charge cooler manifolds impose on serious drag racing builds. The design was proven at TX2K 2026 in ambient temperatures consistently above 90 degrees F, where three S58-powered vehicles ran 7-second passes, including the current world record holder for fastest BMW, Tom Wrigley Performance at 7.67 seconds and 183 mph. The manifold supports both external Air-to-Water and Air-to-Air intercooler configurations, making it the only competition-level S58 billet option proven in both cooling architectures at the same event.

Key Features

• Charge cooler removed from manifold housing, allowing a much larger front-mounted intercooler with no core size restrictions
• Compatible with both external Air-to-Water and Air-to-Air intercooler configurations
• CNC machined from solid 6061 billet aluminum by Custom Plenum Creations (CPC), manufactured in Australia
• Internal velocity stacks machined into each runner for optimized airflow balance confirmed by CFD analysis
• Throttle body flange accommodates the larger 77mm BMW S55 throttle body (OEM PN 13-54-7-597-871) for maximum airflow
• Top feed port injection supports 6 or 12 injector configurations with included fuel rail and block-off plugs
• Modular ports on the top of each cylinder runner for nitrous or methanol injection
• Two integrated sensor pads plus one OEM TMAP, two 1/4 NPT, and four 1/8 NPT ports for additional parameter measurement
• CSF Thermal Rejection Manifold Spacer included, proven to lower manifold temperatures by up to 15 percent
• High-pressure O-ring sealed construction rated to withstand 100 psi (7 bar)
• S58-specific billet oil filter housing adapter included for filter access without manifold removal
• Optimized plenum inlet angle for cleaner intercooler pipe routing
• Raw billet aluminum finish standard; custom powder coat, Cerakote, or anodizing available

This Part Fits

Specifications

What Is Included

• 1x CSF 8402 S58 No Limit Billet Air-To-Air Competition Manifold
• 1x CSF Thermal Rejection Manifold Spacer
• 1x Fuel rail for top feed port injection (6 injector setup)
• 6x injector block-off plugs
• 1x S58 billet oil filter housing adapter
• Full hardware and installation kit with picture diagrams and bill of materials

Frequently Asked Questions

The 8402 removes the integrated charge cooler entirely from the manifold, which means there is no core size restriction built into the intake manifold itself. This allows you to run a much larger front-mounted intercooler with an external air-to-air or air-to-water core, effectively breaking the 1500 WHP ceiling that drop-in options face. The Level-Up and similar manifolds are ideal for street and light track builds, while this competition manifold is purpose-built for drag racing at extreme boost levels.

Yes. The manifold is compatible with both external air-to-water and air-to-air intercooler setups. Both configurations were proven at TX2K 2026, where Tom Wrigley Performance ran the A2W setup and GTP Motorsport ran A2A, both posting 7-second passes in ambient temperatures above 90 degrees F.

The 8402 fits all S58-powered BMW platforms: G80 and G81 M3 (2021 and newer), G82 and G83 M4 (2021 and newer), G87 M2 (2023 and newer), F97 X3 M Competition (2020 and newer), and F98 X4 M Competition (2020 and newer). The S58 is the twin-turbo inline-six shared across all of these platforms.

The throttle body flange is engineered to accept the larger 77mm BMW S55 throttle body (OEM part number 13-54-7-597-871). The stock S58 throttle body is smaller, so using the S55 unit is part of the performance-oriented setup. CSF recommends VTT-FAB extension harnesses for the B58/S58 to S55 throttle body conversion.

Yes. The manifold features integrated top feed port injection capability. The included fuel rail supports a 6-injector setup, and an optional second fuel rail (sold separately) allows a 12-injector configuration for builds requiring maximum fuel delivery at very high power levels.

The included CSF Thermal Rejection Manifold Spacer installs between the cylinder head and the manifold to act as a thermal barrier. It is proven to lower intake manifold temperatures by up to 15 percent by reducing heat soak transferred from the cylinder head into the intake charge.

The manifold is manufactured in Australia by Custom Plenum Creations (CPC), a company with decades of experience building high-horsepower billet intake manifolds for platforms including the 2JZ and RB engine families. CPC manufactures under CSF's engineering direction and quality standards.

Yes. There are modular ports on the top of each individual cylinder runner specifically designed for nitrous or methanol injection. These individual runner ports allow for even spray distribution across all six cylinders. The ports come pre-plugged and can be opened as needed when setting up an injection system.

CSF backs the 8402 with their standard manufacturer warranty covering defects in materials and workmanship. Because this is a competition-oriented component intended for extreme-use drag racing applications, verify warranty terms with CSF directly regarding race use coverage.

Installation Instructions

1. Before starting, obtain the BMW S55 77mm throttle body (OEM PN 13-54-7-597-871) and VTT-FAB B58/S58 to S55 throttle body extension harnesses if not already sourced, as these are required for proper fitment.
2. Disconnect the negative battery terminal. Allow the engine to cool completely before handling any intake or fuel components.
3. Depressurize the fuel system by removing the fuel pump fuse and cranking the engine for several seconds, then disconnect the battery again.
4. Remove all intake ducting from the throttle body back to the turbo outlets. Label all vacuum, sensor, and boost hoses before removal.
5. Disconnect the OEM TMAP sensor, all injector connectors, vacuum lines, and the PCV hose from the factory manifold.
6. Remove the factory intake manifold mounting bolts. Carefully lift the manifold clear of the cylinder head and set aside. Inspect the head surface for debris before proceeding.
7. Install the included CSF Thermal Rejection Manifold Spacer onto the cylinder head using the supplied hardware, ensuring the correct orientation per the included picture diagrams and BOM.
8. Lower the manifold into position, aligning it with the spacer and head dowels. Snug all mounting bolts by hand before torquing to the factory specification in a cross pattern.
9. Install the S55 throttle body flange and connect the VTT-FAB extension harness per VTT-FAB instructions.
10. Install the included fuel rail, connect injectors or install the included block-off plugs if port injection will not be used at this time.
11. Install the S58 billet oil filter housing adapter in the location provided. This part ensures the spin-off oil filter remains accessible without removing the manifold.
12. Connect the OEM TMAP sensor, all retained vacuum and boost lines, and any additional sensor ports or NPT fittings as required by your specific setup.
13. Route the external intercooler piping (air-to-air or air-to-water) from the front-mount intercooler to the manifold inlet. The plenum inlet angle is optimized to simplify this routing.
14. Reconnect the battery, prime the fuel system, and check for fuel leaks at all injector and fuel rail connections before starting the engine.
15. Start the engine and inspect all vacuum lines, boost hoses, and sensor connections for leaks at idle and under light throttle before moving to full-load dyno tuning.