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Porsche > 911 & 912 (1965-1989) > Electrical & Relays >

Electronic Control Units

Electronic Control Units

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DISPLAYING 17 to 19 (of 19 products)
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Ignition Starter box CDI+ 8 PIN. Porsche 934 / 935 / 917 / 962 Classic Retrofit - 91160270700, 90160270200, 90160270201, 901602702AX
2
Ignition Starter box CDI+ 8 PIN. Porsche 934 / 935 / 917 / 962 Classic Retrofit
91160270700/C
Product Information
Product Information
Ignition Starter box CDI+ 8 PIN -  Made to Order

The Classic Retrofit 8-pin CDI+ ignition unit is our direct replacement for Bosch CDI spark boxes used in many classic Porsche race cars, including the 911 RSR, 934, 935, 917 and 962. It was also fitted to the early 3-litre 930/911 Turbo and other race cars of the period, including BMW CSL.  

Fitted in a replica CDI case, this unit is a wonderful upgrade for vintage racers where originality and reliability are equally important. It has been tried and tested in many vehicles, including several Le Mans winners still in circulation.

The Classic Retrofit 8-pin CDI+ unit requires no modifications to the original wiring loom harness or metalwork and is 'plug and play'. The soft and hard rev limiters can be programmed via a laptop. All CDI+ units have a 48 MHz microprocessor onboard to control ignition timing. 

It is a little-known fact that the 8-pin CDI boxes provide better regulation over the output voltage than the 3- and 6-pin units. Our redesigned electronic system brings the original voltage regulation concept bang up to date, not just by providing even better regulated output across all of our CDI units, but also by offering true dual-spark output at a 400us interval that truly makes a difference to combustion, right up to 10,000 RPM.

Please note:
This part is on special order terms. It will be made to order and it is not a subject to cancellation or return if not required.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91160270700
91160270700
90160270200
90160270201
901602702AX

The product you are viewing cross references to these numbers
Ignition Starter Unit CDI 6 PIN. Porsche 911 1978-89 Classic Retrofit - 93060270200, 930602702 X, 930602702X
4
Ignition Starter Unit CDI 6 PIN. Porsche 911 1978-89 Classic Retrofit
93060270200/A
Product Information
Product Information
Ignition Starter Unit CDI 6 PIN.
(Bosch Ref 0227300004)

Classic Retrofit replacement CDI+ ignition offers you bespoke modern electronics in a standard looking package. The CDI+ unit requires no modifications to the original wiring harness or vehicle metalwork and is 'plug and play'.

The CDI+ is a direct replacement for the 3 pin and 6 pin Bosch units fitted to Porsche 911's between 1969 and 1983 (and turbo models to ~1988). All CDI+ units have a 48 MHz microprocessor onboard to control ignition timing.

Advanced Unit:
The advanced unit allows the adjustment/tuning of the ignition advance curve and other features by plugging in a laptop. This can be achieved by 'overlaying' a curve on top of the distributor weights/springs curve or by locking the distributor and replacing the curve completely. Either way, you can unlock the true potential of your engine by adjusting fuelling and having the ignition curve to match.

The CDI+ has all the features of the basic unit but allow more flexibility in adjustment:
-Fully programmable ignition advance curve.
-Hard RPM limiter with adjustable ignition cut schemes
-Soft RPM limiter with adjustable ignition retard
-Launch RPM limiter
-Double spark at all RPMs
-Max RPM tell tale
-Shift Light output
-Clutch pedal input
-Tacho calibration
-Upgradeable through firmware updates

Fits:
Porsche 911 1978-83
Porsche 930 3.3L 1978-89

For Installation Guide CLICK HERE

For 911-CDI+ Dyno Test Results CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

93060270200
93060270200
930602702 X
930602702X

The product you are viewing cross references to these numbers
Replacement USB programming cable for Classic Retrofit CDI box. Porsche 911 - 91160270700, 90160270200, 90160270201, 901602702AX
1
Replacement USB programming cable for Classic Retrofit CDI box. Porsche 911
911602707CDI
Product Information
Product Information
Replacement USB programming cable for Classic Retrofit CDI box

Replacement cable for lost or damaged cables used on the Classic Retro fit range of CDI ignition units

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

911602707CDI
91160270700
90160270200
90160270201
901602702AX

The product you are viewing cross references to these numbers
DISPLAYING 17 to 19 (of 19 products)
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About Electronic Control Units

Electronic Control Units (ECUs) – Precision Performance and Reliability for Porsche Vehicles

Electronic Control Units (ECUs) are the brains of your Porsche’s electronic systems, managing and monitoring everything from engine performance to fuel delivery, ignition timing, transmission response, and emissions control. These highly sophisticated modules communicate with multiple sensors and actuators to ensure your car runs efficiently, safely, and smoothly under all driving conditions.

At Design911, we supply a wide range of genuine and high quality ECUs for Porsche models - including engine control units, transmission control modules, body control units, and more. Each ECU is manufactured to the highest standards, ensuring exact compatibility and seamless communication with your vehicle’s electronic architecture.

What Do Electronic Control Units Do?

An ECU acts as the central processor of a vehicle’s system, interpreting data from sensors and adjusting performance parameters in real-time. Depending on the application, ECUs can control:

  • Engine management: fuel injection, ignition timing, turbo boost, and air-fuel ratios.
  • Transmission systems: shift points, torque converter lock-up, and gear selection.
  • ABS and traction control: maintaining grip and stability.
  • Body systems: lighting, climate control, and interior functions.

Modern Porsche vehicles often contain multiple ECUs working together across a CAN bus network, ensuring optimal efficiency, emissions compliance, and driver comfort.

Why Do ECUs Fail?
Electronic Control Units are robust, but can fail due to age, environmental factors, or electrical faults. Common causes include:

  • Water ingress or corrosion: damaging internal circuits.
  • Voltage spikes or short circuits: caused by battery or alternator issues.
  • Thermal stress: from prolonged engine heat cycles.
  • Software corruption or data errors: due to low voltage or improper programming.
  • Connector and harness faults: causing poor communication with sensors.

Symptoms of ECU failure may include engine misfires, warning lights, poor performance, stalling, or failure to start.

Why replace your ECU?
A faulty ECU can cause unpredictable performance, poor fuel economy, and safety concerns. Replacing a malfunctioning unit restores the precision and reliability your Porsche was built to deliver.

Benefits of replacing with a quality ECU include:

  • Full compatibility with vehicle systems.
  • Restored factory performance and efficiency.
  • Elimination of warning lights and diagnostic faults.
  • Improved reliability and drivability.

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