Well here's a strange one? I have a Syncro with 5 cylinder audi petrol engine. Its wired to the standard (I think) 4 cylinder tacho. Hence it reads 25 percent high. Now i'n no electrical wizard, so I think the easiest solution will be to make a new face,. Has anyone done this, or does anyone have a drawing of face dimensions? Someone used to do new faces on here, cant remember who.
ie
READING RPM ACTUAL RPM
...1000...........,,,800
....2000............1600
....3000............2400
....4000............3200
....5000............4000
....6000............4800
....7000............5600
....8000............6400
Figs based on the assumption that 5 pulses per rev instead of 4 pulses per rev.
