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Steve,
How much difference does it make?
We ran 3 x Twin Plug Rally cars with single MSD and Twin Plugs, they produced about 265 BHP fro 3.0SC engines with GE60 cams and 10.31 compression.
We never tried them with two units and I would be interested to know what improvement we could gain.
We ran a fairly tight plug gap and used NGK BP8ES plugs.
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