MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Wheels & Tire Accessories 12 Crank Bolt Pattern

12 Crank Bolt Pattern

Featuring brushless pump technology and a twin screw rotor design

Extra material allows for porting to 2

20 Degree Inline Valves

1997-2001 Ford Expedition

MSD 6BTM Series Multiple Spark Ignition Controller w/ Boost Timing Master Wheels & Tire Accessories 12 Crank Bolt PatternThe 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