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Description

HP Ignition AutoDiag Ignition Coils – With LED Diagnostics for M50, M60, S50 & S38 Engines

The HP Ignition AutoDiag ignition coils are the ultimate upgrade for serious performance builds and motorsport. As well as improved performance, these coils feature a unique integrated diagnostic system with LED indicators.

On top of each coil sits an additional component that continuously monitors the ignition. As soon as a problem occurs in a cylinder – such as a misfire or a faulty spark plug – the LED on the coil concerned lights up immediately. This makes tracking down problems quicker and easier than ever.

When the engine is started, all LEDs light up briefly for 5 seconds. This confirms that the AutoDiag system is working correctly. If an LED stays lit or comes on later, you know exactly where the problem lies.

This makes these coils ideal for track days, drifting and competition use, where fast diagnosis and maintenance are crucial.

In addition to this smart technology, the coils also deliver a stronger and more stable spark than OEM versions. This results in better combustion, fewer misfires and a power gain of up to 4%.

Proof of performance (dyno test)

The dyno comparison below shows that HP Ignition coils deliver measurable gains in power and torque compared with standard coils.

Key benefits

• Built-in LED diagnostics per cylinder
• Instant insight into misfires or ignition problems
• Stronger and more stable spark
• Power gain of up to ±4% (hp and torque)
• Plug & play installation (no modifications required)
• Ideal for track, drift and competition

How does AutoDiag work?

• On start-up: all LEDs light up for 5 seconds (system check)
• During use: LED stays off = everything OK
• Problem: the LED of the cylinder concerned lights up
  👉 Track down faults in no time without diagnostic equipment

Compatibility

Suitable for engine codes:

• M50B20
• M50B25
• M60B30
• M60B40
• S38B38
• S50B30

Also suitable for all TU & TUB variants.

Applications (selection)

• 3 Series E36
• M3 E36 3.0
• 5 Series E34
• M5 E34 3.8
• 7 Series E32 / E38
• 8 Series E31

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.