It's a good idea in theory but in practice it's not going to work. Whether you 'unplug' the ABS unit or not the fluid is still going through it. So the only way it could be truly removed from the equation would be to make new lines and bypass the pump.Time to disable the ABS system ( if that's possible ) and run the car normally for a few days and see if the problem persists.
Unfortunately, the brake system is not designed to work that way. For one thing, there is no proportioning valve and for another - I really doubt the car would function at all, and if it did, you'd be introducing so many issues that it would probably not be able to be driven.
For myself, I've done my due diligence (and then some) and at some point a person has to weigh out what their time is worth and also if we're getting into a case of 'paralysis by analysis'.
We know it's not the master, we know it's not the calipers or hoses - that leaves exactly what? The only thing left is the pressure modulator. Given that the issue is intermittent and that's it related to pressure I'd have to say that the smart money is on the ABS pressure modulator
Hopefully the next one I order will survive the trip! :bonkers: