Personally I would want to trigger the automatic retard from a spot closer to the nitrous solenoids. In most cases it won't make much difference. But if you come across a scenario where the retard gets triggered before the nitrous actually comes on, the engine loses power and could get pulled below your window switch's lower limit. I came across that problem when adding a nitrous launch delay timer. Retard was activated when I went full throttle, but the nitrous didn't come on until after the delay timer timed out. With no timing the engine got pulled down below the window switch before the nitrous came on, which made a bad bog even worse.
Grant
