Not sure what mileage you are at, but being proactive is always good if you can afford it and the car is long term. The earlier injectors can be replaced for ~$150 which is pretty reasonable compared to the later models.

I've found these injectors can last anywhere from 90-150k.

Can't find the thread, but somebody talked about how Chevron Techron injector cleaner product is close to useless for CIS systems. Put a good dose of Redline Injector cleaner since it is uses more PEA detergent compared to Techron.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k