Mine only ever squeak or squeal if have been sat on the motorway for a while, i think it is a bulid up of brake material and other rubbish, the cure; stick it in 2nd/3rd and have some fun into the bends. Once they have been used and abused it will clear, normal driving wont help.
I'm not to worried about it, most brakes would squeal after heavy use and build up of brake dust. Happened after trackday and the Wales run. It goes after a while, if all else fails and nothin works. New discs and pads, hahahha
I get a bit from the rears under light braking sometimes, nothing to write home about thankfully (I did try a set of Group B Carbone Lorraine pads in my old Evo once... think I woke the whole street up coming home the first night and must have been close to shattering everybodies windows the squeal was so loud... awesome stopping power though lol, they lastest 2 days before I put standards back in)
Also, if you're running uprated pads which don't have the black rubber looking shim on the back, you can buy self adhesive 3M stuff which is exactly the same. The seller I've used on ebay before, paulorla, doesn't have any listed at the moment, but might be worth an email to see if he has more?
I've run all sorts of pads with the 3M stuff and Cera Tec and never had squealing.
Also, if you're running uprated pads which don't have the black rubber looking shim on the back, you can buy self adhesive 3M stuff which is exactly the same. The seller I've used on ebay before, paulorla, doesn't have any listed at the moment, but might be worth an email to see if he has more?
I've run all sorts of pads with the 3M stuff and Cera Tec and never had squealing.