Best Msd Performance Ignition Control Units in 2026

With soft touch rev control

Higher output with 530 primary volts and 135mj of spark energy

Efficient components use less current to produce more power

This ignition uses capacitive discharge technology

Multiple sparks improve starting and idle

Full power output at high RPM

All new housing, digital circuits and performance

Built-in 2-step rev control - with rotary dials

Higher output with up to 135 m and 535 V

Replace the OEM ignition module with Street Fire

Module replaces OEM GM HEI and Street Fire distributor

Fits Street Fire distributor PN 8362 and OEM

Brand New MSD Digital 6AL Ignition Control Box with Built-In Rev Limiter, 520-540 Volts, Compatible with 4,6 & 8 Cylinder Engines, Produced by Holley Performance Products (Part #6425)

The MSD 6AL Ignition Control set the standards that other ignitions strive to reach. In fact, you will find ignitions from other companies that carry the 6AL name (and in some cases, the same part number). MSD raised the bar even higher with the revised Digital 6AL Ignition Control!

The wiring of the Digital 6AL is routed out one end of the unit through a sealed and locking connector. This eases installation and keeps your wiring looking neat and clean. The rev limiter of the 6AL is located right on top of the housing for easy access to the 2 rotary dials to set the limit in 100 RPM increments.

USB connection for ease of programming

Timing based on engine RPM and gear value

Advanced individual cylinder timing based on gear or time

Switch between two rev limits that adjust with rotary switches in 100 RPM increments

Single stage retard for nitrous and top end performance

Start retard eases pressure on the starter, flywheel and engine

Features a starter saver

Comes with a signal stabilizer

Choose 10 or 20 degrees of retard during cranking only

Brand New MSD Digital 6A Ignition Control Box, 520-540 Volts, Compatible with 4,6 & 8 Cylinder Engines, Produced by Holley Performance Products (Part #6201)

If you are looking to improve the performance of your modified mill, we have the answer. Whether you have done a cam swap, or bolted on a carb, intake and headers, the 6A is a surefire way to harness all the ponies under your hood.

The Digital 6A is a microprocessor controlled, capacitive discharge ignition that multi sparks up to 3,000 RPM providing easy starts, a clean, smooth idle and quick throttle response by optimizing your engines efficiency. Above 3,000 RPM, a single spark stays lit for up to 20 degrees of crankshaft rotation ensuring a complete burn of the air / fuel mixture in every cylinder.

Brand New MSD 6AL-2 Ignition Control, Red, Universal, Built-In 2 Step Rev-Limiter, 4 Rotary Dials, 535 Primary Volts (Part #6421).

The іgnition control combines a new housing, new dіgital controls, and more power in a sleek package. Inside the new cast aluminum housing is an advanced mіcro-controller that manages the built-in two-step rev-limiter. The spark output of the new box has been turned up to 535 volts of primary voltage with spark energy reaching up to 135 millijoules! The multiple sparks of the 6AL-2 burn in the cylinder for 20 degrees of crankshaft rotation to ensure complete combustion.

Two rev limiters - one for high-end overrev protection and another you can activate off a clutch or trans-brake to set a launch limit. This feature will help your car blast off the starting line! Adjustments are made via 4 rotary dials for 100 rpm increment control! The all-new capacitive discharge іgnition will easily connect to nearly any 12-volt negative ground distributor system.