The other day I decided I should clean the fuel injectors on my Lude before I go to the Dyno, so I made a small fuel injector cleaning device and headed on down to o'ripoffilley's looking at fuel injector cleaners, when I ask the clerk what he recommended(usually i don't do this).
He pointed me to this Berryman B-12 Chemtool fuel injector cleaner, at first I was going to get the little gas tank bottle but I opted for the spray can stuff.
What I can say is this stuff was fucking incredible, I tested the stuff on the fuel rail of my DD first, which has 90k of mileage, the outside of the injectors were caked with crud, I sprayed it down and the grime literally melted off.
I was quite amazed how good this stiff worked so I pump some through thru the injectors, and you could see when I did the first pulse they were a little clogged, but the next pulse on the injector cleaned them like factory new.
I give it a 10 out 10, and the 15oz spray can costed about 5$, with the liquid 12oz stuff costing about the same.