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IGN1A Smart Coil
IGN1A Smart Coil
IGN1A Smart Coil
IGN1A Smart Coil
IGN1A Smart Coil

IGN1A Smart Coil

5 out of 5 based on 1 customer rating
(1 customer review )

From: $71.00

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48" Color Coded IGN-1A Pigtail – optional

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IGN-1A Crimp Connector – optional

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SKU: IGN-1A Category: Tags: , Brand:

Description

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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    What is the pinout for this coil?

    Here is the connector pinout:

    A – Ignition signal from ECU
    B – Logic ground, connect to ECU sensor ground
    C – Spark wire ground, connect to cylinder head
    D – Power ground, connect to battery negative
    E – 12 volt power

    Do you have a wiring diagram?

     

     

    Questions & Answers

    1. 0 votes
      A

      It depends on which Haltech ECU we're dealing with, but if your ECU supports Haltech's HT-020114 coils, you'd configure it the same way for our IGN-1As.

    2. 1 vote
      There are no answers for this question yet. Answer now
    3. 0 votes
      A

      We currently don't have a complete Miata-specific wiring diagram - please contact our tech support team with details of what sort of Miata you are installing these on, and we can go over the wiring in more detail.

    4. 0 votes
      A

      We've had these coils used on methanol fueled engines running 40 psi of boost in the same RPM range; for a naturally aspirated build, you'll have no trouble as long as this is a four stroke.

    5. 0 votes
      A

      Yes, pricing is for one coil.

    6. 0 votes
      A

      Using these with our drop on harness would require making your own coil subharnesses from the 7 pin connector to the coils. So it's not a direct plug in, but it can be done.

    7. 1 vote
      A

      This would work reasonably well if the engine is not particularly high winding. Spark energy will start to drop off above 5000 RPM.

    8. 0 votes
      A

      The battery negative is the best point for noise suppression. Frame grounds can be affected by rust and other issues.

    9. 0 votes
      A

      I would not recommend using this coil for forced induction distributor based applications. The duty cycle recommendations mean it will have less spark energy at high RPM compared to running a set of six of these coils or using a CDI type ignition.