MSD ASY11537 6600 RPM Module Chip Rev Limiter

The MSD ASY11537 is a plug-in 6600 RPM module chip designed to set a precise rev limit on compatible MSD ignition systems. Also commonly referred to as an RPM pill, this small but critical component plugs directly into the RPM module socket on MSD Soft Touch Rev Controls, MSD ignition boxes with an integrated rev limiter, and other MSD accessories that accept plug-in modules.

Key Features:

• Sets rev limit at 6,600 RPM for precise engine protection
• Direct plug-in installation — no tools or complex programming required
• Compatible with MSD Soft Touch Rev Controls and MSD ignition boxes with integrated rev limiters
• Suitable for use as a high-side rev limiter, 2-step launch control, burnout RPM control, or shift point limiter
• CARB EO compliant — legal for sale and use on emissions-controlled vehicles in all 50 states when used per the manufacturer's application guide
• Sold individually

MSD RPM modules are a proven staple in performance and racing applications. Simply swap modules to change your rev limit without modifying your ignition box. Kits containing multiple RPM modules in 100 RPM increments are also available separately from MSD for tuners who require flexibility across RPM ranges.