Quick history of my car. 84k miles X57RS and supporting mods. Running e30 tune. I bought a media blaster from harbor freight and some course walnut blasting media. Took it all apart and soaked it with cleaner, blasted it, soaked it again, and put it all together. Started it up and instant reaction was there is no longer any ticking/clicking noises during idle. Acceleration is quicker than before and power builds faster too. I only did a quick second gear pull but there is a noticeable difference in performance. If you are somewhat handy this cleaning it isn't as hard as you think. Go to YouTube and type in ford Ecoboost walnut blasting intake valves and you'll find some informative/instructional videos. This is a must do cleaning if you want to keep your car running/performing well.