hi welcome to the forum!
yes we still sell it, send a private-message to PeteG40 about it.
You spray it into one of the charger inlets with the engine running, you need to rev the engine slightly. Give it about 3 or 4 short sprays every 1000 miles or so. Try not to get carried away with it, I've seen and heard of some people spraying way too much of it in and it ends up with a thick coating of it all over the inside of the charger and boost pipes which is too much.
