MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Wheels & Tire Accessories 9703Since 1938

9703Since 1938

1959-1959 GMC PM250

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MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Wheels & Tire Accessories 9703Since 1938The 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