quote:How can anyone argue that an improvement in front brake performance is a bad thing...
Removing proportioning valve moves balance towards the front. All agree?
If balance is right from the start, then it's a bad thing. If balance is too much to the rear from the start, then it's a good thing. All agree?
My view: If you change nothing else (like calipers and disc sizes) then you assume to know things the factory didn't, if you decide to remove the proportioning valve (and thereby change the brake balance). Do you? Probably not.
People that remove the proportioning valve say that they feel the car brakes better, well the front end does, and that can be felt as hard firm braking, the rear wheels contribute less. My first Pantera had had the proportioning valve removed by previous owner, everything else on the brakes looked original. In the rain the front wheels would lock and skid over the pavement and rear wheels didn't really contribute that much. It was terrible.
If on the other hand you upgrade brakes with a vendor kit, you should remove the proportioning valve because their kits are balanced wihout a proportioning valve (I assume )