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- 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
Accessories Kit for Roller Barrel ITB Upgrade
The Rennen by JSR Roller Barrel ITB Accessories Kit is the complete engine
management and sensor package designed to support a professional Roller Barrel
Individual Throttle Body (ITB) conversion. This comprehensive kit contains all
of the critical sensors, brackets, vacuum components and trigger wheel hardware
required to allow a modern standalone ECU to accurately monitor and control
your Porsche engine.
Fits:
- 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
While the Roller Barrel Throttle Bodies provide the airflow and throttle response benefits of the conversion, the accessories kit provides the information the ECU needs to operate the engine correctly. Without these supporting components, the ECU cannot accurately determine engine position, throttle opening, manifold pressure or cylinder synchronisation.
This kit has been specifically developed to complement the Rennen by JSR Roller Barrel ITB system and provides a convenient, matched solution for builders seeking maximum performance, drivability and reliability.
What's Included?
The kit includes:
- 1 x MAP Sensor
- 1 x Throttle Position Sensor (TPS)
- 1 x Crankshaft Position Sensor (CPS)
- 1 x Camshaft Position Sensor (CMP)
- 1 x Camshaft Position Sensor Mounting Bracket
- 1 x Crankshaft Position Sensor Mounting Bracket
- 1 x Crankshaft Position Trigger Wheel
- 1 x Vacuum Manifold
- 1 x Vacuum Manifold Tubing & Fittings Kit
Together these components provide the ECU with the information required to deliver precise fuel and ignition control.
What Does Each Component Do?
MAP Sensor
The Manifold Absolute Pressure (MAP) Sensor measures intake
vacuum and engine load. This allows the ECU to calculate fuel delivery
requirements and optimise ignition timing.
Benefits include:
- Accurate load sensing
- Improved fuel mapping
- Better drivability
- Enhanced engine efficiency
Throttle Position Sensor (TPS)
The TPS measures throttle opening angle and tells the ECU
how much driver demand is being applied.
Benefits include:
- Instant throttle response
- Improved acceleration enrichment
- Precise throttle mapping
- Enhanced drivability
Crankshaft Position Sensor (CPS)
The CPS monitors crankshaft speed and position, providing
the ECU with its primary engine timing reference.
Benefits include:
- Accurate ignition timing
- Reliable engine synchronisation
- Stable engine operation
- Improved performance
Camshaft Position Sensor (CMP)
The Camshaft Position Sensor identifies which cylinder is on
its firing cycle, allowing sequential fuel injection and advanced ignition
strategies.
Benefits include:
- Sequential fuel injection
- Improved cold starts
- Enhanced engine efficiency
- More accurate ECU control
Sensor Mounting Brackets
The dedicated sensor brackets provide precise positioning
for both the crankshaft and camshaft sensors, ensuring accurate and reliable
signal generation.
Benefits include:
- Correct sensor alignment
- Reliable signal quality
- Professional installation
- Long-term durability
Crankshaft Position Trigger Wheel
The trigger wheel provides the reference teeth required by
the crankshaft sensor to determine engine speed and position.
Benefits include:
- Accurate RPM monitoring
- Reliable ECU synchronisation
- Precision ignition control
- Essential EFI functionality
Vacuum Manifold & Fittings Kit
The vacuum manifold combines vacuum signals from each
throttle body into a stable source for the MAP sensor and other vacuum-operated
systems.
Benefits include:
- Stable vacuum signal
- Improved ECU load calculations
- Enhanced tuning accuracy
- Complete installation solution
Why Are These Components Required?
Roller Barrel Throttle Bodies significantly increase airflow
and throttle response, but they require modern engine management to fully
exploit their potential.
The ECU relies on these sensors and supporting components
to:
- Control fuel injection
- Calculate engine load
- Monitor engine position
- Control ignition timing
- Support idle stability
- Deliver smooth drivability
- Maximise performance
Without these inputs, the ECU cannot operate correctly.
Why Are Roller Barrel ITB Upgrades So Popular?
Rennen by JSR Roller Barrel Throttle Bodies are one of the most advanced induction upgrades available for Porsche engines.
Benefits include:
- Exceptional throttle response
- Increased airflow capacity
- Improved engine breathing
- Greater power potential
- Enhanced torque delivery
- Distinctive induction sound
- Motorsport-inspired engineering
- Stunning engine bay presentation
When paired with the correct engine management components, they deliver a driving experience unlike any conventional intake system.
This kit is comprised of the following items: