Yes it does and it is very good at what it does as long as the relevant pre-checks are performed to ensure an effective clean and critically it is done by someone who is properly trained, certified, with the right approach and equipment.
An Engine Carbon Clean is great at cleaning up the back of a turbo, combustion chamber, injector tips, pistons, cylinders and cats to get a vehicle running smooth, quiet, responsive, economical and emissions friendly again, but will not clean up cold areas such as EGR valves or inlet manifolds and won’t unblock a DPF.
The only way to clean up these cold areas safely and effectively is a manual approach, e.g. strip and clean of the EGR or ‘walnut blast’ the inlet.
The Engine Carbon Clean is complementary to these manual approaches as they are targeted at different areas.
Cleaning up the combustion chamber cleans up the source of the dirt – this helps minimise future buildup in the EGR and inlet manifold as well as extends the mileage between DPF regenerations.