demented wrote:MSD6BTM
clarify
how did he blow ah sr18?
The MSD6 with Boost Timing Master retards and advances ignition timing with and increase or decrease in boost pressure i.e less chance of detonation and the ability to run higher boost safely.
This description is from a racing website that sells it.
MSD 6 BTM Racing Ignition
If you have a turbo or supercharger, the 6BTM is the ignition for you. You get MSD's multiple sparks and capacitive discharge power, and a built-in boost retard circuit to prevent detonation. The MSD-6BTM prevents detonation by automatically retarding the spark timing as the boost pressure increases. By electronically controlling the spark advance, a supercharged engine can operate on the threshold of detonation for maximum engine power and efficiency. The MSD-6BTM's spark timing retard can be adjusted from 1 degree per pound of boost to 3 degrees, with a maximum retard of 15 degrees. A convenient dash mounted control knob allows you to make adjustments while driving to compensate for changes in altitude, air temperature and fuel octane levels. The spark timing retard is activated by a boost pressure sensor located on the side of the unit, and also features a built in rev control.
