camry exhaust

Like that

Like that

What do you mean, "like fire?" Are you saying the exhaust is very hot? Like red hot? If that's the case, it may be a plugged catalytic converter, or you're air fuel mixture is running very very rich. (running rich can also cause damage to the cat, so you may have both conditions.) Someone will have to look at the car to determine what is happening.

I replied above before you posted pics, so now having seen those, I'll add: you are clearly running rich, as that appears to be the manifold glowing red. You probably have a few other issues as well, like bad gas mileage, loss of power, and one or more OBD codes. Is this car modified? Running rich has a number of causes, so have a mechanic look at it.

Like the PICTURES very very hot I clean catalytic converters by (catlatic clean )and valve by (VALVE clean) from LIQIU MOLY

And

KenF is right if there's a malfunction there. But 120 Km/hr is 75 MPH!! Holy Cats that's really cruisin' where I live. Maybe a red hot exhaust is normal on a race car. Image what the valves look like.

This car was owned by the agency in 2005 and I did not modify it

I changed the car's computer but did not change ,,,, I checked the car did not get the OBD code

Are there any solutions to the problem?