just been out testing all three used ones i got, with car runnin with a iscv fitted,
i tested the other 2, and all 3 move the same to each other at set duty's
and whilst running with iscv connected i got
0-26% = no rpm change (so still shut)
at 27% duty rpm starts to rise,
at 60% iscv is fully open.
Bud, cant you find someone with a fucked iscv but good spring?