Autosport Labs CoilX v2

  • €54,00
    Yksikköhinta kohti 
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CoilX on sytytyspuolan RPM pulssien suodatinmoduli. Puolalta tulevassa signaalissa on usein häiriötä ja piikit voivat olla luokkaa 400-500 volttia. Puolan signaalin syöttäminen tiedonkeruuseen voi johtaa heikkoon signaalin laatuun ja pahimmillaan voi rikkoa elektronisia osia. 

Suodatin (koko: 25,4 x 12,7 mm) voidaan asentaa johtosarjaan kutistesukan avulla. CoilX v2:ssa on johdot liitettyinä valmiiksi.


  • Kytke "Coil" sytytyspuolan miinus (-) napaan. Kytke vain yhteen puolaan.
  • CoilX voidaan kytkeä myös kierroslukumittarille menevään signaaliin, mutta signaalin tulisi olla suodattamaton. Uudemmissa (>2000) ajoneuvoissa voi signaali olla matalajännitesignaali joka ei toimi CoilX:n kanssa.
  • Merkitse johdot ennen kuin käytät kutistesukkaa!
  • Kytke CoilX 5V syöttöön ("Vref" AiM, RaceCapture/Pro ja Tremondi tuotteissa). Yli 5V rikkoo modulin.
  • Kytke CoilX GND (maa) ajoneuvon maahan
  • Kytke CoilX signaaliulostulo pulssi- / RPM-kanavaan

The CoilX RPM input module allows you to safely sense and filter the RPM pulse from an ignition coil primary winding and create a signal that can be safely handled.

The module features an optically isolated circuit with additional filtering to help prevent false triggers.

The super-compact and lightweight 1″ x 0.5″ module is designed to be assembled with heat shrink and bundled in-line with your wiring harness.


Getting a clean RPM signal on an engine is a tricky problem. The signal from the ignition coil is noisy, with multiple signal spikes reaching 400-500 volts. Directly tapping into this signal can cause erratic RPM readings at best, and at worse, damage electronic components.

The module features an optically isolated circuit with additional filtering, to help prevent false triggers.

The 1" x 0.5" (25,4 x 12,7 mm) compact board is designed to be assembled with heat shrink and bundled in-line with your wiring harness.

Wiring Information

2 pin connector

  • Red: Coil Signal
  • Black: Ground (External)

3 pin connector

  • Yellow: 5v power
  • Black: Output
  • Red: Ground (data system)

Connect the COIL signal from the CoilX module to the (-) connection of the ignition coil.

  • If you have a multiple coil pack system, choose just one coil pack to connect.
  • Alternatively, you may be able to tap into the tach signal going to your instrument cluster, but the signal here must be derived from the ignition coil. Newer vehicles (about 2000 and on) may have a low-level signal that may not work with CoilX. Consult your vehicle's documentation or measure the signal with an oscilloscope to verify.
  • Label the wires or make note of the colours, then slip the CoilX module into a length of 1" wide heat shrink tubing to insulate and protect the module. Once it is complete, you can include this assembly with your wiring harness bundle.

RaceCapture/Pro connection

  • Connect the CoilX 5v connection to the 5v Vref connection of RaceCapture/Pro
  • Do not exceed 5 volts or damage to module will occur
  • Connect the CoilX GND connection to the same ground point as RaceCapture/Pro
  • Connect the CoilX output signal to one of the Frequency / Pulse inputs channels.
  • In the Race Capture app, navigate to the channel configuration page and configure it for your settings.
  • select RPM for channel Name
    • select a sample rate. 10 to 20Hz is usually a good value to start with.
    • Select Mode = RPM, Timer Speed = Medium, and pulse per revolution to match the number of cylinders.
    • You may need to experiment with this setting to get the correct RPM reading.
  • The CoilX module cleans and shapes the noisy 400v ignition flyback signal in the following way:

    • The raw ignition signal is passed through a diode to prevent negative voltage transients.
    • Then the signal is clipped via a Zener diode so voltages lower than 75v are discarded. This filters out the ringing components of the signal, which is the primary cause of false triggers.
    • The clipped signal is passed through an optoisolator via current limiting resistors.
    • The optoisolator output is further filtered through a single inverting logic gate using a schmitt trigger filter.
    • The filtered / conditioned 0-5v signal is fed into the RaceCapture/Pro timer input channel.