its a fuel system cleaner.. and does not go down the intake at all, so how can it clean up an intake it never passes by.
they do, so I've read, an intake cleaner also... but not seen that. Had a demo of the fuel system cleaner and it just runs off their fuel direct into your fuel lines... Runs hot as hell on the fast idle.. It was not an intake cleaner, and on the diesel 1.4 and my tfsi leon cupra I had demo on, it made Zero difference.