Modern direct injection engines are designed to deliver better fuel efficiency and improved performance, but they also come with a common issue that many vehicle owners don't realise—carbon build-up. Over time, carbon deposits accumulate on the intake valves and inside the intake ports, restricting airflow into the engine. This can reduce performance, increase fuel consumption, and cause a range of drivability problems. At Revhigh Tuning Solutions, we regularly see vehicles s

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

The 2019 Mazda 3 Skyactiv 2.0L came into the workshop showing the typical signs we see with modern direct injection engines — carbon buildup and less-than-ideal performance. Unlike traditional engines, GDI (Gasoline Direct Injection) systems don’t wash the intake valves with fuel, which leads to carbon deposits forming over time. Left unchecked, this can affect airflow, efficiency, and overall drivability. What We Carried Out: • Carbon Walnut Blasting A full walnut blast was

This 2017 Mazda CX-7 Diesel came to us for our tuning special . The vehicle had previously been tuned elsewhere, but after a full inspection and initial assessment, we quickly identified several issues within the existing calibration. As we always say — not all tunes are created equal. The Problem While the vehicle had already been modified and tuned, the previous setup showed: Inconsistent torque delivery Suboptimal fuel and boost calibration Areas where the engine wasn’t op

Rhys embarked on an exciting road trip from the west side, driven by his passion for automotive performance and a desire to unlock the true potential of his Audi SQ5 TDI. His destination? A top-notch service center known for their expert walnut blasting and custom dyno tuning. What followed was an impressive transformation that exceeded all expectations. Starting Point: Solid Performance Rhys' Audi SQ5 TDI wasn't just any vehicle—it was already a powerhouse with a stock outpu

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