I bring my car to a local Lexus/Toyota shop and they are recommending a fuel injection cleaning at 25,000 miles. They worked on my car and my father's car before that and are very trustworthy. The mechanics are all certified by Lexus/Toyota. The thing is I don't see this on the Lexus recommended maintenance for the IS-F. Is this needed? I don't think a a fuel injector cleaning would hurt and if anything it may help performance. Opinions?