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Looking for a high powered ignition system? These coils are designed to put out 103 mJ per spark, with a longer spark duration (2.9 ms) than what you'd see with a capacitive discharge. They are the same coils used in the Huber Mustang, which makes over 250 hp per cylinder, as well as on our own Miata project car. A 19 amp IGBT ignitor is built in. They can be driven with a 5 volt logic level output - we recommend a 270 to 330 ohm pullup if you're building a MegaSquirt to drive them, and they can fully charge with as low as 2.5 ms of dwell. Normally, you'd use them for a distributorless ignition as a coil per plug application. They can be fired sequentially or every crank revolution (wasted spark coil per plug). If used as a single coil with a distributor you may need to run a bit less dwell to prevent heat buildup from being an issue.
The connector is not included, they can be ordered separately here.
Here is the connector pinout:
A - Ignition signal from ECU
B - Logic ground, connect to ECU ground
C - Spark wire ground, connect to cylinder head
D - Power ground, connect to battery negative
E - 12 volt power
The coil charges when a 5 volt signal is applied to pin A, and fires when the voltage drops to zero. The signal is similar to an LSx coil, although it does need a bit more current than what is needed to make an LSx coil charge. |
