I don't know if anybody is going to read this posting burried in so many pages of settings, but it's not only about suspension:
If you have upgraded brakes, like I do, they are affected by weight transfer.
If the d-specs provide flat braking, due to the front vs rear settings, like mines once did, the ABS system is affected by this. There's an article on Stoptech's page about upgraded brakes that deals with this.
So I have Brembo GT front upgrade only, they were designed to work with the OEM rears. Not also with the modified weight transfer, due to the D-specs.
At high speed strong braking, the rears don't lock up anymore and the fronts start locking early.
Once I adjusted the d-specs to allow for some dive, the problem was alleviated.