Any one use the msd 7 or 8?

With the grid you “mechanically” lock in the max advance you would ever want. Then the box just delays what you want, when you want. I was really on the fence about going for the grid. For me I could really tailor how to ramp in timing for the little tire. Also I could pull timing on the 1-2 shift to soften the hit when that becomes an issue. Just not enough $$$$$$ in the old racing budget! Plus IIRC you can use it with an older box, but it needs to be a chip box not the new dial box and of course only my spare has the chip. I think with a power adder I would definitely go with some sort of programmable box.