The only way to have injectors flushed or cleaned out is to remove them from the rail and to send them out to have them cleaned by a professional cleaning service. Cruzin Performance amon others are the only ones I know that backflow injectors to clean them out. http://www.cruzinperformance.com/

All of the "injector flush" services I have heard of put a double shot of Techron in your tank and charge you a couple hundred for their "service".

As others have said if you use a gasoline with high quality additives there is no reason to worry about an "injector flush".http://www.popularmechanics.com/auto...o/4220245.html