In development — what we have so far. Details may change before release.
State-of-the-art coil-on-plug programmable ignition, like modern sports cars, on your small engine now!
Spark, set from your phone.
Coil-on-plug ignition
Programmable coil-on-plug ignition for small engines. It drives GM LS-style smart coils, one coil per cylinder.
Singles first, V-twins in development
Built for single-cylinder engines. V-twin support is in development.
Replaces your magneto, and Guardian
The Interrupter replaces your stock magneto ignition and Guardian. Rev limit and 2-step are built in, so never run both on one engine.
No timing light
The setup wizard learns your flywheel, then auto-tunes the timing while the engine runs at a steady speed.
Timing presets
Stock, Trail, Street and Race. You can also edit the RPM timing curve yourself.
Rev limit and 2-step
A rev limiter and a 2-step launch limiter, adjusted live from your phone.
Optional sensors
A MAP sensor for load timing, and a head-temperature sensor that pulls timing when the engine runs hot.
Nitrous input
Pulls timing while the nitrous is on.
Progressive nitrous or boost
The AUX OUT wire ramps a nitrous solenoid in, or brings boost up step by step with a MAC solenoid. One job at a time, through a solid-state relay.
Set up from your phone
Set up and tuned from the STOKER phone app over Bluetooth.
Every curve is yours.
The planned tuning screens, shown as design mock-ups. They are not in the STOKER app yet.
Pick a preset, then drag any point or tap it and use − and +. The box joins your points with straight lines: what you draw is what fires. This is a demo — nothing is sent to an engine.
Press Run: the nitrous input closes and the ramp starts.
The solenoid opens part way, then ramps to full, so the hit builds instead of slamming the tires.
Demo only — nothing is sent to an engine. One AUX OUT wire: nitrous ramp or boost, one at a time.
Press Run: the engine goes into boost and the ramp starts.
A MAC solenoid on the wastegate line brings boost up step by step. Needs a 2- or 3-bar MAP sensor.
Demo only — nothing is sent to an engine. One AUX OUT wire: nitrous ramp or boost, one at a time.
Your timing curve
Load and boost trim
Nitrous retard
Progressive nitrous
Boost control
No timing light.
The planned STOKER setup walks you through it, one screen at a time. Shown as design mock-ups.
Spin and learn
Spin the engine with the spark off. The box learns your flywheel.
Singles and twins.
One box runs singles and V-twins.
Want to know when it is ready?
Leave your email and Tom will write when there is news. The wiring guide is up too.