360 ABS seems to kick in early on my '99 360

So I have an early '99 360 and the ABS seems to kick in early, and a bit overly aggressively in spirited street driving.

I have a lot of track and racing experience in cars and on motorcycles (decades) so in general I know what a car/tire combination can do, and it feels like I should have a lot more braking ability there before lock up, but ABS seems to limit me.

The car is stock except a gated manual swap I recently did. For tires, they are not the best, but they are decent. It has stock wheels and Goodyear Eagle Exhilarate tires in stock size. They were on the car when I got it and are not worn or aged out and are less than 3-4 years old. They handle decent in corners and accelerating.

I know some of the electronics like the F1 TCU on the early cars are not as mature as the later ones so I'm wondering if that was similar with the ABS? Maybe I can upgrade the ABS ECU or the pump?

It's also possible that I'm just not used to such a stiff, race like car on the street and am just wrong in thinking there's more braking there.

Is there an easy ABS fuse to pull that would disable it for a quick test where I can threshold brake without ABS interfering and see where the limit is?

It's also a possibility that the F/R bias is non-optimal too.

 

Yeah that's a bit what I was worried about. Even on my 1987 BMW E30 track car with much more primitive electronics, just pulling the ABS relay made the brakes feel wooden and hard to modulate on the race track.

I had to completely re plumb the lines and bypass the ABS hydraulics completely.