There is this company called carbon cleaning USA, it has branches all over the world, anyways they claim that they have a carbon cleaning machine that cleans carbon from your whole system, i have called and asked about the procedure, they told me they hook a hose to the air intake and that machine gives hydrogen pulses that goes with the air to the engine and cleans your whole system, is it safe and is it legit?

The only reason i am considering this is because we have a 2013 ssangyong korando, and that car has only 35k miles, that car is barely driven and when it's driven it's always short and slow drives, i have used liqui moly cleaning products a couple times in the past and they do really make a difference in the cars performance, so i am assuming the car stuffed with carbon from inside, the exhaust is also filled with of carbon

I could use cleaning products, but the company claims it cleans everything from a-z which sounds convincing, injectors, egr, dpf, oxygen sensor, catalytic converter, sparkplugs, valves