Mike Wills wrote:

Paul Y wrote:

 I have yet to see anything but an improvement
across the powerband.  Aside from full throttle operation, there are
gains to be had at low manifold pressures as well.  If they didn't work
better, I would not recommend them.  I do not sell them, and I do not
make any money when MSD sells them.

Paul Y,

 What kind of reliability have you experienced with the MSD? Ive had MSD-6A
boxes on two different V8 powered street cars without ever having a
problem, but... A local acquaintance who buids race cars/engines for
various 1/8 - 1/4 mile dirt track classes (and who coincidentally is
building an RV-4 which has a 13B on it) says he always has 2 MSD boxes
mounted in the car that are driver selectable. The claim is that the boxes
are somewhat unreliable so there needs to be some redundancy. Perhaps this
only applies to the hotter MSD-7 race box?

Mike Wills

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