MSD Launch Rev Limiter Switch Box

SKU: MSD-7551 Categories: ,


Quickly Change Launch RPM


Change your launch rpm on the fly with this controller. No need to dive into the ProData Software. For use with Programmable Digital-7 Plus Ignition only. This handy controller lets you change the launch rpm setting instantly for last second chang­es in track conditions. They plug into the RS232 computer harness and have two rotary dials for adjustments.


  • Instantly changes the launch RPM setting of the Programmable Controls
  • Two control dials, one for 1,000 RPM and another for 100 RPM
  • Adjustable from 1,000-10,900 RPM in 100 RPM increments
  • Can only be used with programmable MSD Ignition Controls and Accessories


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Installation Instructions