it was a bit difficult to install as it was hard determining whether the tap was seated properly. the nozzles don't screw it all the way but i didn't know that till i looked it up.
this is not the first BSH product i've installed and it didn't go as smoothly as i expected (same case on all my BSH installs), so if i had to buy a boost tap again, i probably would try another manufacturer.
it's a great boost tap and does the job, but there are better ones out there i'm sure, but they also cost more as well