This MSD RPM Module Chip is a plug-in rev-limiter chip that sets a fixed 7,800 RPM ignition cutoff in compatible MSD ignition control boxes that accept interchangeable RPM modules, letting an engine builder or racer dial in a precise rev limit without reprogramming the box.
Specifications:
- Type: RPM Module Chip (plug-in rev limiter)
- RPM Setting: 7,800 RPM
- Packaging: Each
- Part Number: ASY11547
FAQ
What RPM does the MSD ASY11547 module set the ignition to cut out at?
It is a fixed 7,800 RPM module — the ignition box cuts spark once the engine reaches 7,800 RPM.
What does this module plug into?
It plugs into MSD ignition control boxes designed to accept interchangeable RPM module chips.
Can the RPM limit be changed later?
Not on this module — it is fixed at 7,800 RPM. Reaching a different rev limit requires swapping in a different MSD RPM module.

