Intake manifold Runner Flapper Delete + valves cleaning

So what is intake manifold Runner Flapper Delete (RFD™) kit means?

The runner flaps are individual plates, much like a throttle body flap. They are located within the intake manifold runners. Unfortunately even when fully opened, the flaps still represent an airflow restriction. For additional technical information please follow this link.

This is how RFD kit looks like:

RFD: intake manifold  runner flaps stubs.

Taking an advantage of already dismounted intake manifold (the access to intake valves was open) - intake valves were cleaned.

The carbon deposit accumulation on intake valves is a well known problem of all direct injection engines. So if you have one and your car millage is 80,000 km or more - it worth to clean them. It's quite dirty procedure, but you have no choice. Otherwise, these deposits will lead to reduced engine performance, bad fuel economy and other troubles. :-(

BG Gasoline Direct Injection Cleaner.

Before cleaning.

After cleaning.

After valves cleaning you may see that the valve's bodies are started to shine.

Intake manifold (before RFD install).

With RFD kit in place.

The throttle body is also cleaned.

Throttle body before cleaning: no serious dirt is detected.

Important note:
You can't simply install RFD kit and go.
In addition to hardware installation it requires proper ECU software recalibrations that's supported by APR and some others tuning companies. Currently, I'm running APR Stage II+FP+RFD V3.4 software and it's performs flawlessly.

Odometer: 72,600 km.