[Mark Henry]

Originally Posted by Steve@Rennsport

One MSD box can fire two coils, however the output is halved and we see the result on the engine dyno.

For best power, one needs two ignition boxes and two matching coils.

Not that its relevant, but the '73-'74 RSR (and all 935's) used twin Bosch CD boxes and twin coils.

Yes but what do you see? 1-3% or 10-15%?
I believe you have been asked this before with no answer.
Is the torque numbers also down? As an engine builder torque has always been more important to me than HP numbers.

If it's 3% in a street car it will not be a hill of beans.
In a race car, sure, of course you want every spec of HP you can gain.

In my narrow body 914 3.0 street car, I should dyno over 250hp, I'm not going to really care if I'm losing 5 hp.