The Audi S5 V8 is known for its smooth power delivery, great sound and strong performance. But like many direct-injection engines, it can develop a problem that isn't always visible from the outside — carbon buildup inside the intake system. This S5 came into Revhigh for a walnut blast and carbon clean to remove accumulated carbon deposits and help restore proper airflow through the intake system. So, Where Does All That Carbon Come From? As the engine operates, carbon deposi

Carbon buildup is a common issue on modern diesel engines, particularly vehicles that spend a lot of time driving around town or at lower engine speeds. Over time, deposits can build up in the intake system and around the intake valves, restricting airflow and affecting engine efficiency. This Holden Colorado 2.8L Turbo Diesel came into Revhigh for a carbon clean and walnut blast to remove years of built-up deposits. Just How Dirty Was It? As you can see from the photos, the

Modern diesel engines — especially Euro diesel vehicles like BMW, Audi, Volkswagen and Mercedes-Benz — commonly suffer from carbon accumulation due to: EGR (Exhaust Gas Recirculation) systems Oil vapour from the PCV system Soot recirculation Short-trip driving conditions Over time, thick carbon deposits restrict airflow inside the intake manifold and intake ports. This can lead to: Rough idle Reduced power Sluggish throttle response Poor fuel economy Increased smoke Engine he

When Dave reached out to us, he was referred by his trusted mechanic for a much-needed overhaul of his 2016 BMW 520D M-Sport. Recognizing the importance of maintaining peak performance, Dave entrusted us with the task of performing a Walnut blast, Carbon clean, and a custom DYNO tune on his beloved vehicle. Our team got to work, ensuring every aspect of Dave's BMW received the attention it deserved. Alongside the Walnut blast and Carbon clean, we fine-tuned the engine with a