Injector cleaning

you shouldn't have too if you use top tier grade gas

also.. you can just get a can of seafoam and run that through the gas tank, it'll clean your injectors if they have any crud in them

Liquid said:

That "Direct Injection" gas tank treatment makes no sense. Point is, in direct injection, no fuel is hitting the part of valve (back) that has the issue. You can put treatment in tank all you want but none of that chemical will make contact with the problem area.

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OP is talking about injector cleaning not valve cleaning.
But to your point, yes all direct injection cars will have problems with carbon deposits building up on the back of valves.

Toyota has come up with a system that has direct injection as well as port injection, this eliminates that carbon build up problem.

I'd like to see if anyone on the forum with the skyactiv is having any carbon build up problems yet