Cleaning and then obd scanning can do wonders. If fuel consumption is bad, long starts, vibration, then you will benefit from this.
But often its not just the injectors that need attention. The sensors might be dirty, you diagnose problems of that sort using obd scan.
My point is that you will get full advantage of this only if the guys who clean the injectors later dovan obd scan ( and also can understand what those readings mean, your engine might be running rich, but might not be showing an error, so they must be able to understand what the data from those sensors means.
For obd scan to give accurate result everything needs to be perfect, spark plugs should be new and injectors clean. Then you can optimize your car
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