Description

The CDI+ 3 Pin is Classic Retrofit’s direct replacement for Bosch CDI units used in the classic Porsche 911 from 1969 to 1977. Extensive development and rigorous dyno testing has proven our CDI+ unit to be major improvement over the original Bosch CDI box.
CDI boxes are also fitted to Maserati Ghibli, Alfa Romeo Montreal and are popular with BMW 3.0 CSL racers.

The Classic Retrofit CDI+ unit requires no modifications to the original wiring loom harness or metalwork and is ‘plug and play’. Their custom aluminium casing sits perfectly in your engine bay for a very attractive appearance. All Porsche 911 CDI+ units have a 48 MHz microprocessor onboard to control ignition timing.  Their electronics module can also be retrofitted into an original case by special request.
The road unit is a plug and play replacement for the Original Bosch CDI. It is pre-set at the factory (to your specification) and has the following features:

• Hard RPM limiter
• Soft RPM limiter
• Launch RPM limiter
• Adaptive multi spark at low RPM
• Dual spark at high RPM
• Shift Light output
• Clutch pedal input
• Tacho calibration

The following parameters can be adjusted using the hidden ‘jog wheel’.

• Hard RPM limiter.
• Soft RPM limiter.
• Shift light RPM.
• Tacho calibration.

The unit comes with a laptop cable which allows adjustment of the following:

• Ignition advance curve.
• Soft limiter retard.
• Hard limiter cut scheme.
• Max RPM tell tale
• Engine run time
• MFI fuel pump cutoff RPM min/max.
• Multi spark interval.
• Launch control RPM limit.
• Firmware updates

The unit works with the existing distributor without modification and can use the weights and springs for the advance curve. It can also be programmed with a custom ignition timing ‘map’ by connecting a laptop (cable supplied). The ignition map can either work with a locked distributor or by ‘overlaying’ advance on top of the standard distributor mechanical advance.

Downloads
Manual
Test Results