Throttle screw. Porsche 911 / 924S / 944  ❭  93011091900

PMO EFI Throttle Body Kit – Natural Aluminium Finish – 40mm / 46mm / 50mm

Upgrade your classic air-cooled Porsche to modern electronic fuel injection with the PMO EFI Throttle Body Kit, available with 40mm, 46mm or 50mm throttle bodies in a natural aluminium finish.

Fits

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 914-6 (1970-1976)

Designed for air-cooled six-cylinder Porsche engines from 1965 to 1998, PMO individual throttle bodies combine the classic appearance and response of traditional carburettors with the accurate fuel control and tuning possibilities of modern EFI.

Whether building a responsive road engine, fast-road Porsche or high-performance competition engine, the choice of three throttle body sizes allows the induction system to be matched more closely to your engine specification.

Inlet Manifolds, Fuel Injectors and Throttle Position Sensor (TPS) are Not Included

Please note that inlet manifolds, fuel injectors and the TPS shown in product imagery are for reference and are not included with the kit.

What Does the PMO EFI Throttle Body Kit Do?

PMO individual throttle bodies replace carburettors or the existing induction system as part of an electronic fuel injection conversion.

Each cylinder receives its own throttle bore, providing direct airflow into the engine. Fuel delivery is then electronically controlled through individual injectors and a compatible aftermarket ECU.

When correctly installed and tuned, benefits can include:

• Sharper throttle response
• Precise electronic fuel control
• Improved engine tuneability
• Improved cold starting and driveability
• Better control of air/fuel ratios
• Potential improvements in performance and fuel efficiency
• Individual throttle response for each cylinder
• Classic carburettor-style appearance with modern EFI control

40mm, 46mm or 50mm – Which Size?

PMO EFI throttle bodies are available in three bore sizes to suit different engine specifications.

• 40mm – Well suited to smaller-capacity and road-focused engines where air velocity, low-to-mid-range response and driveability are important.
• 46mm – A good choice for larger-capacity, modified and fast-road engines requiring increased airflow while retaining strong throttle response.
• 50mm – Designed for highly modified, large-capacity and competition engines where maximum airflow and high-RPM performance are priorities.

Correct sizing depends on engine capacity, cylinder heads, camshafts, compression ratio, intended RPM range and power requirements. Consult your engine builder when selecting the appropriate size.

Precision PMO Construction

PMO EFI throttle bodies are precision CNC machined and hand assembled in Anaheim, California using high-quality aerospace-grade materials.

Sealed ball bearings provide durability, while the one-piece throttle shaft maintains accurate alignment and helps provide smooth, consistent throttle operation.

Tapered 52mm intake throats improve airflow into the throttle bodies, while billet fuel rails accommodate Bosch-style fuel injectors.

EFI Management Compatibility

PMO EFI throttle bodies can be used with programmable engine management systems including Haltech, MegaSquirt, MoTeC and other suitable aftermarket EFI controllers.

The ECU must be correctly configured and professionally tuned for the individual engine specification.

Injector size, fuel pressure, sensors and ECU configuration should be discussed with your engine builder or EFI system supplier before installation.

Converting from Carburettors to EFI

Converting a carburetted Porsche engine to EFI requires a suitable high-pressure fuel system in addition to the throttle bodies.

A fuel pump capable of approximately 60 psi is required. The Walbro GSL393 external inline fuel pump, rated at approximately 160 LPH, is one suitable option, although another correctly specified 60 psi universal EFI fuel pump may also be used.

Fuel lines, filtration, pressure regulation and other associated components must also be suitable for EFI operating pressures.

Associated components to added include:

• Fuel rail retaining/injector clip – 534-102
• TPS sensor – 17123852
• Bosch-style fuel injectors
• Suitable high-pressure EFI fuel pump
• Compatible programmable ECU

Injector specification should be selected according to engine capacity, expected power output, fuel type and EFI system requirements.

PMO EFI Throttle Body Kits for Air-Cooled Porsche

PMO individual throttle bodies provide an ideal solution for owners wanting the appearance and immediate response associated with classic carburettor induction while gaining the control and tuning potential of electronic fuel injection.

Available in 40mm, 46mm and 50mm sizes, PMO EFI throttle bodies can be matched to a wide variety of standard, modified and competition air-cooled Porsche flat-six engines.

The natural aluminium finish provides a clean, period-inspired appearance that complements classic Porsche engine bays while concealing modern EFI technology within a traditional individual-throttle-body layout.