You can, in fact, mist water into the intake while revving the engine to decarbonize the motor, and yes, it can be done on fuel injected cars. I must stress this point, however, that it has to be done in MODERATION and by a TRAINED TECHNICIAN. I would NOT recommend that just anyone tries this, for fear of a hydro locked motor. For those of you who have done/witnessed this, don't you think its cool how the exhaust manifolds start glowing bright red after doing this for a while?
