Here's some threads that were discussing it:

Injector cleaner - this stuff is the best!!!

Throttle Body Cleaning

Tune-up questions.................

Just had throttle body cleaned...

It looks like 3 of them were on the Accord boards and one in Engine Tech. Perhaps that's why no one on the Civic board knows about the stuff. My car runs hella better after treating it. It is most deffinately on my list of advisable products that I swear to. Only one other product do I swear by, and that's Lucas Heavy Duty Oil Stabilizer:




I always substitute a quart of that stuff in place of one of the quarts of oil. The engine runs GREAT with it.