Engine Noise Increased - Humming at High Speed

Hello friends,

My vehicle 2004 model Gasoline / LPG

A week ago, I noticed that the noise in the engine and belts increased. The hum began at high revs. And when you press the gas, there is tremor in the console.

The first thing that comes to my mind is about the air filter or the pipes to the butterfly.

I have doubts about LPG. Could the regulator / brain or injectors do this, can it be related to gas adjustment? The LPG warning light has been on for a long time. So I couldn't realize a very serious decrease in traction. Oil juice is in place.

Is there any suggestion, friends, I showed it to a master, it is normal, I do not want to be an interlocutor anymore. They should not waste us for a ton of money.

At the same time, when I pull my feet out of the gas, the vehicle slows down the revolution as if it is giving the gas to itself, and it does not suddenly compress as before.

All the signs show me the throttle section, the air intake section to the engine.

What should I do, thank you in advance.