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- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
The DesignTek Stage 1 turbocharger upgrade service converts customer-supplied Porsche 993 911 GT2 turbochargers to MD422 & MD423 hybrid specification. No complete replacement turbochargers are included.
How the Service Works
Submit your existing turbochargers for modification. Alternatively, obtain new units independently and arrange their conversion as a separate service; purchasing turbochargers does not include upgrade work.
Fits
- Porsche 993 911 GT2 — application specified for this upgrade service.
- 993 (911) (1994–1998)
- 993 (911) TURBO 1994–96
- 993 (911) TURBO S 1994–97
- Porsche 911 Turbo (993) originally fitted with 5316-970-6736 and 5316-970-6735 turbos.
- Porsche 911 Turbo, engine code M64/60, year &, OEM number 99312301452
Turbo and Turbo S entries describe retained applications, not universal donor-unit suitability for this GT2 conversion. Confirm compatibility of both submitted turbochargers. The M64/60 entry provides no valid application year.
Diagram: 202-16, item 1
What This Product Does
This is a modification service applied to turbochargers supplied by the customer. The specified conversion is MD422 & MD423; it is neither an outright turbocharger pair nor an engine overhaul kit.
Functions
- Converts submitted turbochargers to Stage 1 hybrid specification.
- Accepts existing units or independently purchased new turbochargers, subject to compatibility checks.
Technical Details
- Service specification: Stage 1 hybrid conversion, MD422 & MD423.
- Historical designations MD435 & MD436 are retained for identification only and do not specify this conversion.
- Recorded turbocharger references: 5316-970-6736, 5316-970-6735 and 5316-988-6736.
- Recorded engine code: M64/60.
- Internal assembly information identifies turbocharger 99312301452, note /R.
- Historical output designation: 550-600 bhp. No verified output is established for this GT2 service.
These Hybrid Turbos must be fitted as a pair.
* Please Note: Our hybrid turbochargers require exact engine management settings and/or supporting modifications to achieve these horsepower figures.
The retained horsepower note does not establish an output guarantee for this conversion.
Symptoms of Fault
Investigate unusual whining, exhaust smoke, increased oil consumption, delayed boost delivery or oil leakage before submitting units. These symptoms alone do not establish that turbocharger modification is appropriate.
Why Replacement Matters
An upgrade cannot correct an unresolved mechanical defect. Assess engine condition, oil supply, boost pipework and seals first, and review the engine-management requirements alongside any supporting modifications.
FAQs
Are complete turbochargers included?
No. You supply the units that undergo conversion.
Can newly purchased units be submitted?
Yes, subject to compatibility. Obtain them independently and arrange modification separately.
Which specification is requested?
MD422 & MD423. The historical MD435 & MD436 designations do not define this service.
Before ordering, confirm suitability against your vehicle's model, production year and engine specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
MD422MD423
The product you are viewing cross references to these numbers
.jpg?width=197 "Boost Pressure Sensor. Porsche 991 - 03G906051D - 6PP 009 400-471")
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Maintain accurate engine management and optimum turbocharger performance with this HELLA Boost Pressure Sensor. As a leading Original Equipment (OE) manufacturer, HELLA produces high-precision engine management sensors that deliver exceptional accuracy, reliability, and long service life. Designed to monitor intake manifold or boost pressure, this sensor provides the engine control unit (ECU) with real-time pressure data to regulate turbocharger operation, fuel injection, and air-fuel mixture for maximum efficiency and performance.
Fits:
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
IX51 - For Cars With Powerkit 250kW
Diagram Ref No 23
The boost pressure sensor continuously measures the pressure within the intake system, enabling the ECU to control turbocharger boost levels and optimise engine performance under varying driving conditions. Manufactured using high-quality electronic components within a durable, heat-resistant housing, it is engineered to withstand vibration, temperature fluctuations, and the demanding conditions of the engine bay. This makes it an ideal replacement for worn or faulty sensors during Porsche maintenance, repairs, or engine management servicing.
What This Product Does:
- Monitors intake manifold and turbocharger boost pressure.
- Sends accurate pressure data to the engine control unit.
- Supports precise turbocharger control.
- Optimises fuel injection and air-fuel mixture.
- Improves engine performance, efficiency, and emissions.
- Replaces faulty or inaccurate boost pressure sensors.
- Provides an OE-quality fit for straightforward installation.
Symptoms Of Wear Or Failure:
- Engine management warning light illuminated.
- Reduced engine performance or acceleration.
- Turbocharger underboost or overboost conditions.
- Poor throttle response.
- Increased fuel consumption.
- Vehicle entering limp-home mode.
- Diagnostic fault codes relating to boost pressure or intake pressure.
- Irregular turbocharger operation.
Why Replacement Matters:
- The boost pressure sensor is a critical component of the engine management system, providing the ECU with the accurate pressure information required to control turbocharger boost and fuel delivery. A faulty sensor can result in incorrect boost regulation, poor engine performance, increased fuel consumption, higher exhaust emissions, and the vehicle entering reduced-power or limp-home mode. Continued operation with an inaccurate sensor may place unnecessary strain on the turbocharger and related engine components.
- Replacing a worn or faulty sensor with this HELLA Boost Pressure Sensor restores accurate pressure monitoring, improves turbocharger control, enhances engine performance and fuel efficiency, and supports reliable long-term engine operation. Manufactured by HELLA to Original Equipment standards, this boost pressure sensor delivers exceptional fit, precision, durability, and reliability for Porsche maintenance, repairs, and engine management servicing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
03G906051D
The product you are viewing cross references to these numbers
.jpg){kind=link}
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Maintain optimum engine performance and precise turbocharger control with this Genuine Porsche Boost Pressure Sensor, a direct replacement for 03G906051D. Manufactured to Porsche's exact factory specifications, this sensor delivers the accuracy, reliability, and durability required for the engine management system to regulate turbocharger boost pressure and optimise engine efficiency. Designed to provide real-time intake pressure data to the engine control unit (ECU), it helps ensure smooth power delivery, efficient fuel combustion, and low exhaust emissions.
Fits:
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
IX51 - For Cars With Powerkit 250kW
Diagram Ref No 23
The boost pressure sensor continuously monitors the pressure within the intake manifold or charge air system, enabling the ECU to adjust turbocharger boost, fuel injection, and air-fuel mixture according to engine load and driving conditions. Manufactured using high-quality electronic components within a durable, heat-resistant housing, it is engineered to withstand the demanding temperatures, vibration, and environmental conditions of the engine bay. This genuine Porsche replacement sensor is ideal for routine maintenance, engine diagnostics, and repairs.
What This Product Does:
- Monitors intake manifold and turbocharger boost pressure.
- Sends accurate pressure readings to the engine control unit.
- Supports precise turbocharger boost regulation.
- Optimises fuel injection and combustion efficiency.
- Improves engine performance, fuel economy, and emissions.
- Replaces faulty or inaccurate boost pressure sensors.
- Provides a genuine Porsche fit for straightforward installation.
Symptoms Of Wear Or Failure:
- Engine management warning light illuminated.
- Reduced engine performance or acceleration.
- Turbocharger underboost or overboost conditions.
- Poor throttle response.
- Increased fuel consumption.
- Vehicle entering limp-home mode.
- Diagnostic fault codes relating to boost pressure or intake pressure.
- Irregular turbocharger operation.
Why Replacement Matters:
- The boost pressure sensor is a critical component of the engine management system, providing the ECU with the accurate intake pressure information required to control turbocharger boost and optimise engine operation. A faulty sensor can result in incorrect boost regulation, reduced engine performance, increased fuel consumption, higher exhaust emissions, and the vehicle entering reduced-power or limp-home mode. Continued operation with an inaccurate sensor may also place unnecessary strain on the turbocharger and related engine components.
- Replacing a worn or faulty sensor with this Genuine Porsche Boost Pressure Sensor restores accurate boost pressure monitoring, improves turbocharger performance, enhances fuel efficiency, and supports reliable long-term engine operation. Manufactured to Porsche's exacting standards, it delivers exceptional fit, durability, precision, and reliability for Porsche maintenance, repairs, and engine management servicing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
03G906051D
The product you are viewing cross references to these numbers