This part number is for a case quantity of 24 of the IGN-1A smart race coil. You get the exact same IGN1-A coil, but at a discount for buying IGN1A bulk quantities. We want to be your Warehouse Club for ignition coils! This listing is for 24 coils.
The IGN1A Smart Coil by AMP EFI requires no CDI Ignition Module to produce 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 monster coils used in Street Outlaws No Prep Kings contender, ‘The Hulk!’
Each IGN1A Smart Coil features a 19 amp IGBT ignitor built in and can be driven with a 5 volt logic level output – an MS3X or MS3Pro will run them directly (set spark output to going high), and we recommend a 270 to 330 ohm pullup if you’re building a MegaSquirt 1 or MegaSquirt 2 to drive them and 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, however 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. Maximum recommended duty cycle is 40%. Requires HEI-type plug wire ends/ boots.
Plugs are sold separately. We offer either a 4 foot long flying lead pigtail or a pin and connector kit.
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 dwell starts when a 5 volt signal is applied to pin A and the coil fires when the voltage drops to zero. The signal is similar to an LSx coil, although it does need a bit more current to trigger.
Smart Coil specs:
Minimum Output Voltage (no load, at recommended dwell): 40,000 volts
Maximum Output Voltage: up to 81,000 volts (+/- 10%)
Output energy: 103 mJ
Spark duration: 2.9 ms
Primary resistance: 0.5 ohms (not directly measurable)
Primary inductance: 4.8 mH (not directly measurable)
Secondary resistance: 8,500 ohms
Secondary inductance: 22.5 H
Turns ratio: 71.1
Maximum current: 19 amps
Maximum battery voltage: 17 volts
Nominal dwell: 3.0 ms
Excessive dwell or duty cycle may cause meltdown. As with any race coil, the manufacturer does not provide a warranty.
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