These igniters contain no dwell control or automatic shutdown and are designed to be driven by an intelligent engine management computer which has a dwell controlled output. Single, Double , Triple and Quad output modules are available.
These modules are designed to be triggered with a square wave current source signal which has an amplitude less than 15V and is capable of supplying 10mA drive. When using a pull up resistor for drive supply we suggest you select a value between 220 - 390 ohms. The signal rising edge determines the start of coil dwell and ignition occurs on the falling edge.
For maximum performance we suggest you use an ignition coil with a primary resistance between 0.4 and 0.8 ohm and a primary inductance between 2.5mH and 3.5mH such as our high energy transformer style coils. Under no circumstances use a series ballast resistor. Ignition coils with a
resistance up to 1 ohm and 6mH inductance will work however spark energy may suffer.
Where possible the ignition module should be mounted on a metal surface and in an air flow region to aid cooling. Do not mount the module directly on the engine or on the firewall near the exhaust !
Under normal circumstances there should be no need to change the heat range or gap of the spark plugs you are using. Due to the high energy output from our inductive ignition systems it may be possible to enlarge the plug gap for better performance. We suggest you try increasing the plug
gap to 0.060" (1.5mm) on naturally aspirated engines, if any miss-firing is detected under load, reduce the gap in stages until it is eliminated.
Due to the high energy generated by our ignition systems we recommend you replace any carbon suppressed HT leads with high quality spiral wound magnetically suppressed metal core leads.
CAUTION! The use of ignition coils above 1 ohm may cause miss firing, overheating or damage to the igniter or ignition coil and void any warranty claims.