Can anyone verify that the Subaru (2002) reads 0.5 to 2.5 Ω (FULL) and 50 to 52 Ω (EMPTY) and also looks like it uses 2 sending units wired in series (summed sender)
I found it below
1998_impreza_fuel_gauge_resistance.jpg
The Boyd tank will show the reverse fuel level as sending unit (Centroid) will not work with the stock WRX/STi cluster as the Centroid sender is 0-90 ohms not 90-0 ohms. Time to talk to Centroid to see if they can program for a summed 90-0 sender.
I talked to Centroid tonight and anyone using a Boyd tank with a Centroid sender (0/90) needs to order a 100/0 Yamaha as this has been programed with a linear range and also you need to get damping option (since the Subaru used summed senders to prevent slosh) the damping will help prevent that.