Free Uk Delivery available

This mappable ignition system connects to any distributor simply and discreetly, retaining the classic look. It gives full user control over advance characteristics for vacuum, boost or TPS. It's key features are:

    • Compatible with electronic ignition units or points

    • RPM and load maps

    • Easy configuration via laptop with USB connection

    • Configurable "soft" rev limiter

    • Built in immobiliser

The Amethyst unit takes its input from the existing distributor (once advance has been locked) and calculates the required ignition advance based on RPM and either inlet manifold pressure or throttle position. The unit can be configured via a PC connected to its USB port.

The software package allows you to choose and/or modify from any of the preloaded maps or download your own existing advance curve, which can then be modified to suit your engine specification. You can switch between two of your stored maps remotely, without the need to connect to a PC.

The advance characteristic can be matched much more closely to the engine's requirements than is possible with conventional advance springs and a vacuum bulb. Benefits include improved driveability, economy and ultimately better all-round performance.

Dwell is automatically calculated to combine strong sparks at all times with minimum load on your coil. The dwell angle can be entered manually if preferred. The Amethyst also incorporates an effective immobiliser and you can set a "soft" rev limit up to 10,000 RPM.

For the most accurate results, Amethyst should be used in combination with Aldon's Ignitor electronic ignition unit. However, it can also be used with conventional points.

Boost version is designed for turbocharged and supercharged engines, and can be configured to either advance or retard the ignition with positive boost.

More Information
Part NoAM02B
Fits Engine TypeUniversal Fit
Product GroupElectronic Ignition
Replacement Part NosAM04B - Aldon Amethyst mappable ignition system - boost version
Stock StatusNo Longer Available
Brand LogoAldon
Shipping & Delivery

We aim to dispatch all stocked orders either same day (Monday-Friday) or by the following working day (subject to time of order). Orders are shipped by DHL courier service.

For orders that require a guaranteed quick delivery, please contact our sales staff directly by phone who can advise further on your request.

Shipping Prices UK

All orders under £250 will be sent by DHL courier service
Up to 3kg £8.00
3kg-20kg £9.60

All UK orders over £250 are shipped free of charge by DHL.

Shipping Prices Overseas

All deliveries are sent by DHL courier service. Most European countries have the option of an Economy Road Service (with prices starting from £26.00) and Express Air Service. All non-European countries are sent by DHL Air Express. To get a quote for shipping, simply enter the items into the cart, click on ‘My Cart’ and select your country. You do not need to be logged in to use this service.

Note: we are unable to export dangerous goods such as aerosol cans and such items must be removed from the cart before you can proceed with your order.

This mappable ignition system connects to any distributor simply and discreetly, retaining the classic look. It gives full user control over advance characteristics for vacuum, boost or TPS. It's key features are:

    • Compatible with electronic ignition units or points

    • RPM and load maps

    • Easy configuration via laptop with USB connection

    • Configurable "soft" rev limiter

    • Built in immobiliser

The Amethyst unit takes its input from the existing distributor (once advance has been locked) and calculates the required ignition advance based on RPM and either inlet manifold pressure or throttle position. The unit can be configured via a PC connected to its USB port.

The software package allows you to choose and/or modify from any of the preloaded maps or download your own existing advance curve, which can then be modified to suit your engine specification. You can switch between two of your stored maps remotely, without the need to connect to a PC.

The advance characteristic can be matched much more closely to the engine's requirements than is possible with conventional advance springs and a vacuum bulb. Benefits include improved driveability, economy and ultimately better all-round performance.

Dwell is automatically calculated to combine strong sparks at all times with minimum load on your coil. The dwell angle can be entered manually if preferred. The Amethyst also incorporates an effective immobiliser and you can set a "soft" rev limit up to 10,000 RPM.

For the most accurate results, Amethyst should be used in combination with Aldon's Ignitor electronic ignition unit. However, it can also be used with conventional points.

Boost version is designed for turbocharged and supercharged engines, and can be configured to either advance or retard the ignition with positive boost.

More Information
Part NoAM02B
Fits Engine TypeUniversal Fit
Product GroupElectronic Ignition
Replacement Part NosAM04B - Aldon Amethyst mappable ignition system - boost version
Stock StatusNo Longer Available
Brand LogoAldon
Shipping & Delivery

We aim to dispatch all stocked orders either same day (Monday-Friday) or by the following working day (subject to time of order). Orders are shipped by DHL courier service.

For orders that require a guaranteed quick delivery, please contact our sales staff directly by phone who can advise further on your request.

Shipping Prices UK

All orders under £250 will be sent by DHL courier service
Up to 3kg £8.00
3kg-20kg £9.60

All UK orders over £250 are shipped free of charge by DHL.

Shipping Prices Overseas

All deliveries are sent by DHL courier service. Most European countries have the option of an Economy Road Service (with prices starting from £26.00) and Express Air Service. All non-European countries are sent by DHL Air Express. To get a quote for shipping, simply enter the items into the cart, click on ‘My Cart’ and select your country. You do not need to be logged in to use this service.

Note: we are unable to export dangerous goods such as aerosol cans and such items must be removed from the cart before you can proceed with your order.

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