j-powers are this style?
Not a fan of those, they actually make camber worse. By lifting the UCA relative to the LCA, it's further into it's 'swing'. So as it goes up a little, it goes 'in' more. When the car is sitting you can make the camber nice, but when your driving your camber changes way more because the arms are at all the wrong angles relative to each other.
I put some on my SCCA SM Civic like 5 years ago, took them back off like 15 minutes later. Handled like ****! I thought it would be nice to be able to add more caster, as it turned out in corners I could only use like 1/4 of the tire because of the nasty camber curves I got. Not to mention the severe reduction in travel.
I don't remember the actual numbers, but it was around double the camber change. Originally I got about 1* camber per 1" of travel (- camber in bump, + in droop). With those joints it was like 3* negative camber per inch of bump and 2* positive camber per inch of droop.
Not trying to upset anyone here, some reputable companies sell that style of joint. ALL OF THEM SUCK BALLS. I didn't run them long enough to wear tires, but I bet it would have been as bad or worse than running no camber kit.