I need to know where the catalyst system bank 1 is

Without knowing what your codes were it's gonna be hard to tell exactly what's wrong. I assume this isn't a TDI?
According to your description the problem is more than likely your O2 sensor (oxygen sensor). "Bank 1" tells me it's the one BEFORE the catalytic converter. You have two - so it's the one towards the front of the car.

i have navigator 2001 that runs well, only when start is slow until he have some velocity i cleaned the injectors, change the oil and filter, change the air filter, clean the acelerator, but still seems like the brake is on when start
what could be