IGN1A Smart Coil DIYAutoTune

IGN1A Smart Coil DIYAutoTune

104.91 $CAD

SKU: DIY-IGN-1A Category:


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 percent. 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 percent)
  • 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.

Additional information

Weight 0.54 kg
Dimensions 12.065 × 8.89 × 11.43 cm