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Link G4 Plus Software Tutorial: Ignition

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Ignition

02.45

00:00 - First up is the ignition mode which basically tells the ECU how many coils are connected to it.
00:05 The correct option would be dependent on your specific engine.
00:09 Options include direct spark, waste spark, distributor and rotary ignition modes.
00:15 Next we have the spark edge which defines the type of signal sent by the ECU to the coil or ignitor module.
00:22 Getting this wrong is one of the most common ways to damage your coils or ignition system so it is important to make sure this setting is correct.
00:29 For most applications, a falling spark edge is typical.
00:33 Honda, Ford and some MSD ignition systems use rising edge.
00:37 If you're unsure which setting is correct for your application, talk to your local Link dealer.
00:44 As a handy hint, it can be smart to disconnect your ignitor module or coils while you're configuring this function to prevent the change of any damage until you have chosen the correct setting.
00:54 Dwell mode should usually be set to milliseconds.
00:57 Alternatively if your ignition system requires a fixed duty cycle, it can be set to do this.
01:03 Ignition delay is a repeat of the ignition delay setup we discussed during the ignition timing calibration process.
01:10 If you've already done this, you don't need to touch the ignition delay again.
01:16 Spark duration is only really relevant in distributor ignition systems where there may not be enough time at high RPM for the coil to fully charge.
01:24 The spark time defines how long the ECU will wait before beginning the next dwell event.
01:30 This makes sure the spark event is allowed to occur fully.
01:34 Maximum ignition advance is a hard limit on the ignition advance the ECU can supply.
01:39 This eliminates the chance of compensations on top of the main ignition table causing the ignition advance to reach excessive or unsafe levels.
01:48 Next we can access the ignition dwell table through the ECU settings menu.
01:53 This table defines the dwell time or coil charging time in milliseconds.
01:58 You can adjust this table dependent on engine RPM and battery voltage.
02:04 Increased dwell is usually required at low battery voltages to ensure sufficient spark energy.
02:10 The correct settings for this dwell table will depend on your coils and ignitor module.
02:15 It is important not to run excessive dwell as this can damage the coils while giving you no more spark energy.
02:22 Lastly we can perform an ignition test to confirm that spark is occurring.
02:27 And that the correct coil is wired to the correct output.
02:30 If we choose ignition test from the ECU settings menu, we can operate each of the ignition drives individually.