Just had to sign up to drop this app a review. I'd been wishing for a while, for a "knee" hack similar to what Project Cars has, to tweak the FFB on my T300RS to something relatively linear...
I wasn't expecting this! Precisely measured, absolute FFB perfection in one fell swoop!
Along with a couple of personal "post-processing" tweaks to average a few rounds of results, and to add a hint of gamma curve to the final LUT to boost the strength back up a little, FFB is precise, detailed, and nicely powerful.
MANY thanks!