Fitted my NQSBBK kit over the weekend along with the new rotors and pads front and rear.
Slotted the rotors on the milling machine.
The calipers came from the U.K and I'm glad we don't salt the roads here. As can be seen the pads retaining pins and pad springs were heavily corroded. The pins wouldn't even move until I'd sprayed them with lots of penetrating spray and even then I had to sand around them to allow them to slide out. I used the media blaster in the pins and springs though and they came up well. Complete disassembly of the calipers showed that beneath all the crap the seals dust covers and pistons were all in good condition.
I milled a mm off each of the pad posts on the mill for clearance for the GTI rotors which are thicker than the Boxster rotors. Sorry about the blurry pic.
And installed on the car.
So, the good:
Improved initial bite.
Improved breaking power.
Pedal feel actually slightly better than stock.
They look good.
However, the bad:
Despite slotting the rotors myself and installing it all myself it still wasn't a cheap exercise. I did need new pads all round and my rotors were noticeably worn so I was going to have to shell out a bit anyway.
Noise: slight rubbing noise which I assume is from the slots. Didn't actually notice it today so maybe it was just as the pads were bedding in. Also sometimes get a small squeak when coming to a stop. Only about the last couple meters from about 5kph to stopped and only sometimes. It's not loud at all and is only occasional. If it gets worse I'll probably put in Porsche anti rattle shims.
The wheels didn't fit initially despite others saying they had had about a mm clearance. I turned up 3mm spacers from my old rear rotors.
The worst problem though is that it appears that I need to get these certed. I checked the LVVC website last year and it stated if I kept the original rotor size it didn't need a cert. it looks like the law changed in October though and now if calipers aren't OEM then you need a cert. I wouldn't mind so much except that I just forked out for a cert for my adjustable suspension only last month. Grrr!
Overall I'm still pleased to have done it as I've wanted them since first reading about them.