IYO, what's the percentage of improvement?
Lol I couldn’t give you one. They still dust up and turn the wheels a brown color, it just takes a little longer. It’s not a huge reduction in dust by any stretch but a noticeable one.
Doesn’t sound very promising, is there a better option?
Stampede, I can’t see which Mustang model you drive, but if it’s an EcoBoost, V6, or any GT-based model, the dust reduction with the Z26 pads is significant. I haven’t installed the pads on my GT500 yet, so I cannot provide any feedback.
Again, I can’t tell you. I’ve only used stock and Z26. You’re not going to find a completely dustless pad for our cars…and if you do I doubt they have very good braking characteristics.
Pretty difficult to put in a percentage. I'll put it like this, I use to clean my front wheels go for a an hour or two ride and you could see the film of brake dust. Would clean them again before next ride (ocd ,yes). Now I can take 3 rides and my ocd starts to kick in. Hope this helps.