Rev Limiter with Launch Control Compatibility
4 Cylinder
Single Coil and Distributor
A traditional “single coil and distributor” ignition system is compatible.
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Single coils and distributors differ in appearance.
4 Cylinder
Distributor with Internal Coil
These units have the ignition coil inbuilt, often with an ignition amplifier inside too. A rev limiter is suitable but you need to get the wiring inside to the ignition coil. This normally involves removing the distributor cap, rotor arm and flash plate, taking the wire into the unit with its other wires, and then connecting directly onto the ignition coil before rebuilding the unit. This is not a difficult job but does require some mechanical knowledge and simple tools. Both rev limiter coil negative wires will need to be connected to the coil’s coil negative terminal for this to work.
4 Cylinder
Wasted Spark Coil Pack
These are typically a single pack containing two double-ended coils with 4 HT leads coming directly from it.
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Some engines have wasted spark coil packs that look like 4 individual coils, but are still two double ended coils. Examples are some Rover K Series and some small Peugeot engines
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The coil must be non-amplified. You can test this by measuring with a multimeter (resistance setting). Between the 12V terminal and one of the signal terminals (also known as coil negative) a non-amplified coil will measure approximately 1Ω. An amplified coil pack will measure many thousands of ohms (kΩ). An Omex Rev Limiter is only suitable for non-amplified coil packs.
4 Cylinder
Wasted Spark Coil Pack with Externally Attached Amplifier
Some amplified wasted-spark ignition coils have the amplifier built onto them externally.
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Due to the amplifier the Rev Limiter cannot be connected directly to the vehicle wiring. However it is possible to remove the amplifier to gain access to the true coil negatives.
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Reinstall the amplifier after the rev limiter trigger wires are connected to the coil negatives.
This is a fairly complex procedure so should only be attempted by an appropriately experienced auto electrician.
6 Cylinder
Single Coil and Distributor
A traditional “single coil and distributor” ignition system is compatible.
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Single coils and distributors differ in appearance.
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No other ignition system type is compatible for 6 cylinders
8 Cylinder
Single Coil and Distributor
A traditional “single coil and distributor” ignition system is compatible.
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Single coils and distributors differ in appearance.
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No other ignition system type is compatible for 6 cylinders
Magneto and CD ignition systems (CDI) are NOT compatible.
“Positive earth” vehicles are NOT compatible.
Rotary engines are NOT compatible.
Diesel engines are NOT compatible
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Coil-per-plug can be either 4 fully individual ignition coils or can be 4 ignition coils in one unit, these are NOT compatiable
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Only suitable for use with resistive or EMI-suppressed HT leads (e.g., carbon core or spiral-wound types). Not compatible with non-suppressed leads such as solid or multistrand copper core types.