i know what the problem with the auto is
the s1 doesnt have wiring for a certain sensor for the auto that the r34 ecu needs
not sure if the s2 auto has the sensor
but its not in the actual wiring
so if the auto has the sensor all it means is adding the wire
if the sensor is not in the auto then its too big a job to worry about
im trying to find a fix that wont cost the earth