MSD 6 BTM Ignition Control

The 6 BTM is ideal for engines with a turbo or supercharger. Not only will the engine benefit from MSD’s full power CD sparks, but there is also an adjustable boost/timing retard circuit to prevent detonation.
When your turbo or blower forces the air/fuel mixture into the engine, the cylinder pressure inside the combustion chamber increases. The result is a great increase in power but this can also lead to detonation that can result in severe engine damage. The 6 BTM lets you dial away detonation by retarding the timing in relation to the boost pressure.
A dash mounted control knob lets you adjust the amount of timing retard. It can be adjusted from 0° per pound of boost to 3° per pound (up to 15°).
The 6 BTM also shares the Soft Touch Rev Control for overrev protection. The BTM is supplied with rubber shock mounts and rpm modules for 3,000, 6,000, 7,000 and 8,000 rpm.