Any one use the msd 7 or 8?

Cope said
So this is my limited understanding of how it works.

The CPU reads data at 100 time per second. If the engine RPM spikes it will pull timing and reduce power.
That is per the MSD tech guy who says all the advanced timing functions will work with my MSD pro billet distributor.

I think what needs doing is you make a good pass and adjust the box?

It dose not require any wheel speed. Its what they call "slew timing"?

The MAP sensor will be attached to my 6-71 for boost retard. The crank trigger and cam position sensor are not required but will make tuning easier while providing a more stable ignition event.

Not sure if the box will i interface with my wide band but that would be slick.

From the little bit of reading i have done the box will provide more than i should ever need as a "street car".

That's about the long and short of it.

Slew rate is the lag in the electronics. AFAIK, all ignition boxes (and other stuff like timing lights and such) all have a slew rate. Some ignition boxes retard 2 degrees per 1000 RPM! That's a lot and I haven't varifed it yet, but I'm getting my machine set up so I can measure it.

It's fun to think about it. If your box retards 1 degree per 1000 RPM and you lock out the distributor and set your total at a 1000 RPM idle at say 35, by the time you get to 6000 you only have 30 total! If it's 2 per 1000 you'll only have 25 total.

You can't always see it with a timing light. I'm going to verify every Mallory box I have in the shop and take notes and then I'll start testing other stuff to see where it's at.