Thats quite interesting
i wired mine up saterday to the correct pin and it reads half

but have been told this is normal for cars with coilpacks as it wasn't designed to run with them,
but a freind of mine got motorsport wiring solutions to wire his in for him and they got his 1 reading correctly (full revs) too
any more info peeps?
pm - ELECTRONIC off here as he designed the secs monitor