The EGR valve’s function is to control the flow of exhaust gas being recirculated depending on the engine load. It helps exhaust gases to re-circulate in the engine twice and reduces the emission of harmful NOx. After some time, it can get dirty and reduce performance which will then require an EGR cleaning before any further damage.

What is Carbon build up?

Carbon is a by-product of any combustion process. As your engine burns fuel, either diesel or petrol, carbon builds up in the intake manifolds and exhaust manifolds, as well as in the cylinders.

VAG (Volkswagen Audi Group) engines, in particular, have an Exhaust Gas Recirculation (EGR) valve, which recycles a portion of the exhaust gases back into the cylinders to be re-burned. While this significantly reduces the emissions released into the atmosphere; it also leads to a large build-up of carbon in the engine itself.

As this carbon builds, your acceleration slows, there may be rough idling, or severe engine knocking. At NOVO, we make sure your engine is running as clean as possible to maintain the engine's performance and longevity.

At NOVO, we offer:

- Intake Manifold and EGR removal and cleaning

- Onboard intake/injector cleaning

We revive components back to near new condition with our top of the range cleaning baths and ultrasonic cleaners. As you can see in these photos, the results speak for themselves.