CSF "No Limit" Billet Air-to-Air Competition Manifold – BMW B58 / S58

OVERVIEW

The CSF "No Limit" billet manifold is a competition intake manifold for the BMW B58 (#8401) and S58 (#8402). It removes the charge cooler from the intake manifold entirely, so the factory air-to-water core can be replaced by a much larger external intercooler up front, either air-to-air or air-to-water. CSF built it for maximum-effort drag and race builds targeting more than 1,500 whp, where the factory manifold and its integrated cooler become the limit.

Each manifold is CNC-machined from solid 6061 billet aluminum, with internal velocity stacks, O-ring sealed surfaces rated beyond 100 psi, and a throttle body flange sized for the larger 77mm S55 throttle body. A modular port on top of each runner can be set up for port injection, nitrous or methanol, and a top-feed fuel rail for six port injectors is included. A thermal rejection spacer between the head and manifold helps keep intake manifold temperatures down.

SPECS

• CNC-machined from solid 6061 billet aluminum
• Air-to-air competition design: charge cooler removed from the intake manifold for use with a larger external intercooler (air-to-air or air-to-water)
• Designed for drag racing builds targeting 1,500+ whp
• O-ring sealed surfaces rated to 100+ psi (7+ bar)
• Internal velocity stacks
• Throttle body flange sized for the 77mm S55 throttle body (B58/S58 factory unit is 67–68mm)
• Modular port on top of each runner for port injection, nitrous or methanol
• Two integrated sensor pads; one OEM TMAP port, two 1/4" NPT ports and four 1/8" NPT ports
• Thermal rejection spacer, rated by CSF to lower manifold temperatures by up to 15%
• Top-feed fuel rail for six port injectors included; optional second rail (#8404) for 12-injector dual port injection
• S58 version (#8402) includes a billet oil filter housing adapter
• Finish: raw billet; powder coat, Cerakote or anodizing available from CSF
• Each manifold assembled and inspected in-house by CSF before shipping
• 2-year limited warranty, void if the manifold is disassembled without CSF's prior consent

PARTS INCLUDED

• CSF "No Limit" billet air-to-air manifold for the selected engine (B58 #8401 or S58 #8402)
• One fuel rail for top-feed port injection (six-injector setup)
• Six injector block-off plugs
• Billet oil filter housing adapter (S58 #8402 only)
• Hardware and installation kit with diagrams and bill of materials

TECH RESOURCES

Additional Parts Required

• External intercooler and charge piping (air-to-air or air-to-water) are required and sold separately. This manifold has no built-in charge cooler.
• 77mm S55 throttle body (BMW 13-54-7-597-871). The manifold's throttle body flange is sized for it; sold separately.
• VTT-FAB B58/S58-to-S55 throttle body extension harness, recommended by CSF to simplify the throttle body conversion; sold separately.
• Port injectors, fuel supply plumbing and a tune suited to a competition build are sold separately.
• Optional: CSF Nitrous Jet Fitting Adaptor Plugs (#8403) and Second Fuel Rail Kit (#8404).

Installation

• CSF does not publish a downloadable installation PDF for this part. The diagrams and bill of materials ship in the box.
• Extensive vehicle modification is required. Installation should be done by an experienced B58/S58 technician.

Notes

• For motorsport use only. This part requires extensive modifications to install and is not a bolt-on upgrade.
• CSF also lists this manifold for swapped B58 and S58 engines. Contact Speed Logic to confirm fitment for a swap.
• Toyota GR Supra (A90/A91, B58) version available on request. Contact Speed Logic.

PART NUMBER

• 8401 — B58
• 8402 — S58

VEHICLE APPLICATIONS