Indeed I did, pretty much straight bolt in for me, I think I had to slightly cut the heat shield to fit, but basically bolt in.
One thing to note is that my car drove very differently after, I would get some silly boost spikes (not sure if turbo related or tune related?)
But I have now since done a couple other things (front mount, ebc etc.) and been tuned and run 223kwatw, but prior to front mount was doing something like 178kw
Yeah I have them on my car, I really like them.
Yes they are removable, however it depends on how you attach them and the type of lettering you get.
I sanded the sidewall where I was attaching them to, so that I had a smoothish surface for them to attach to, I also used a heat gun to apply some heat prior to gluing them on, as I don't really fancy one of my letters flying off when driving