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What is carbon and why does it build up?
Carbon build up is a relatively new issue. Carbon is a mixture of by products. Modern vehicles use direct injection for efficiency, as well as exhaust gas recirculation (EGR) and positive crankcase ventilation (PCV) effectively which effectively pump dirty air into the intake manifold full of engine fumes, this ensures great efficiency for emissions. Without going too technical – The video below explains it in simple terms.
Why do i need it?
Early vehicles pumped fuel to back of the valves, called port injection, this had cleaning agents in the fuel, and as the fuel hit the back of the valve helped keep the ports and valves clean. This no longer happens with direct injection engines, because the injector is no longer spraying the intake valves.
Walnut blasting VS the rest.
There are a few methods the industry can use to clean carbon buildup. Hydrogen oxygen, fuel additives – even an intake spray can. Unfortunately there is no way to eat away at the solid carbon build up that forms around the valves and ports without physically accessing them to blast them clean. Walnut blasting enables us to do just that, and the before and after results speak for themselves.
Will walnut damage my car?
Carbon cleaning uses walnut solely because it is a non abrasive media, meaning should any get in the cylinder it will just burn or get blown out the exhaust valves without causing any damage.
Noticeable difference? YES.
The luxury of having a dyno in our performance centre, we have managed to measure the benefits. One example was a 4.2l Audi RS4, we recover through maintenance, simply new spark plugs, and walnut blasting 50whp, close to 20% recovered power.
Tuned BMW 335i with N54 stage 2 engine can gain up to 50-60hp from carbon cleaning, by eliminating the flow restrictions caused by excessive carbon build up.
FAQ
What cars benefit? Most of the Direct injection vehicles, which essentially is almost every vehicle made after 2006. Cars that have severe build up issues: BMW 335i with N55 and N54 engines. Audi B7 RS4 with 4.2 V8. Supercharged 3.0 TFSI Audis, Mercedes C63 with M156 naturally aspirated 6.2 V8 engine. 2.0 Turbo VW Range.
How long will it take? Depending on the vehicle, this can often be completed in a day.
Packages? Yes, talk to one of our crew members. We could tailor a package with servicing, repairs, carbon cleaning, Dyno logging and tuning all at the same time.
How do i get it done? Give us a call or message today to get you carbon buildup sorted! Contact us
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