for the valve cleaning, I just did my second treatment on sat... but I use the CRC Direct injection intake valve cleaner.
http://crcindustries.com/auto/intake-valve-cleaner.php
simple and easy to use. remove the hose going into the intake manifold and spray directly into the hard tube that clips to the top of the intake manifiold.
spray the can in 30 sec intervals till all gone while you have someone hold the rpms at 2,000. rev up to 3500, let it idle a minute or less and shut off. let it sit an hour...
start it up and hit some highway speeds for 10min...clean.
I do it every 2nd oil change, so about 26,000 miles (last oil change with analysis was 13,500 miles). checked inside with a snapon cam internally, and my last oil analysis turned out great.
something to look at if your worried about valve cleaning.
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When I see posts asking "whats the best intake, exhaust, etc" .... the answer to that is like a grandfather telling his grandkids "if you put salt on a birds tail, it'll let you catch it" #ThinkAboutIt
"Winning Tip: Don't take my (or anyone else's) word for it. GO TEST IT!" - Dennis Grant