MSD 8733 2-Step Launch Control for GM LS Engines — Compact RPM Hold, Compatible with 24x/58x & Factory Coils

MSD Ignition 8733 is a compact 2-step launch control module designed to let GM LS engines hold a preset RPM for consistent, repeatable launches.

Built for drag racers and performance street drivers using GM LS platforms, the MSD 8733 adds a simple, reliable way to control engine RPM during launches. It integrates with factory coil packs and works with both 24x and 58x crank trigger systems, so installation is straightforward and wiring stays tidy. The unit is tuned for on-track durability and predictable behavior under load rather than offering complex multi-stage traction algorithms.

How does the 2-step launch control improve my starts?

The 2-step holds engine speed at a user-set RPM while you apply throttle and stage. That steady hold removes the guesswork of throttle modulation and reduces wheelspin when you drop the clutch or hit the transbrake. Consistent launch RPMs directly translate to repeatable elapsed times and better holeshots.

• Holds set RPM for consistent staging and departures
• Helps reduce excessive wheelspin from unexpected throttle peaks
• Works with factory coils to minimize component swaps

Will the MSD 8733 work with my GM LS engine and wiring?

The 8733 is compatible with GM LS engines and is designed to connect to OEM coil packs, making it a fit for many stock-style engine harnesses. It supports both 24x and 58x trigger wheels so it works with common crank position systems used on LS swaps and factory configurations. Always verify trigger type and coil compatibility before installation.

• Compatible with GM LS family engines
• Supports 24x and 58x crank trigger wheels
• Interfaces directly with factory coil packs for easier wiring

How do you set and adjust the launch RPM with this module?

Adjustment is straightforward: the module lets you dial in the desired launch RPM and then hold it when the launch control is activated. Fine tuning on the track allows you to find the optimal RPM for your tire compound and track surface. Because the system is purpose-built for launches, you get predictable control without deep menu diving.

• Simple adjustments deliver target RPM holding behavior
• Quick track-side tuning for tire or surface changes
• No complex calibration routines required for basic operation

What should I expect during installation and use?

Installation focuses on clean integration with the ignition coils and crank reference signal; it avoids major ECU rewrites or complicated CAN-bus reprogramming. The small module mounts in the engine bay and routes to the coils and trigger input. After mounting and wiring, bench-verify connections, then test on the dyno or in staged traffic to confirm RPM hold behavior.

• Mounts in the engine compartment with straightforward coil connections
• Uses existing trigger signal—no extensive ECU programming needed
• Recommended to verify operation off-track before competitive use

Who is this for? The MSD Ignition 8733 2-Step is aimed at drivers running GM LS engines who want a reliable, purpose-built solution for repeatable launches. It suits bracket racers, street/strip enthusiasts, and anyone swapping an LS motor into a custom chassis who needs a simple, effective way to control launch RPM without reprogramming the factory ECU. If you prioritize consistent holeshots and straightforward installation with factory coil compatibility, this module is a practical choice.