I can say I am thoroughly impressed in this kit. It has definately improved my broadband speeds. I was initially getting 3.5Mbps - now just over 6Mbps.
Installation:
You will need a crimper and I would recommend a good crimper tool, as the boards in these filters are very flimsy and can easily break when too much pressure is applied. The rest is easy, A + B for blue wire and white wire. Number 2 for orange wire and number 5 for white wire. Plug into test socket. Job done.
Expectations:
Before you buy this I would seriously think about the realistic speeds you will achieve. There are many factors which contribute to the overall speed in broadband. Do your own tests before purchasing:
Its vital you run speed test as this will give you an idea of what your are achieving. Run several speed tests (Java based speed tests are better), record the scores, then disconnect your equipment and test directly into the master test port (with phones and faxes completely disconnected) and make sure only one device is connected to the router via ethernet cable. Then perform speed tests again and record the scores.
If you notice a large difference in speed test scores i.e. an improvement in speeds than this will confirm the purchase of this product. If you don't then you won't really achieve much gain, if any at all. I would say if you notice speed differences of 2.5Mbps or plus then definately worth getting. If you notice 0.5Mbps difference.. then its not really worth the effort (common sense).
Broadband is a vast topic but the above is a general test that you, the End User can perform.
I hope the above helps and those that have said this product failed... its probably due to your line length and the copper degrading (or simply that your speed is optimal based on line conditions)... there is a solution for that too, but for another day.
I would recommend this product.