Data on Ssangyon Istana

I would like to know what is a pipe that goes from the escape to the admission of the Istana engine, because it found that the previous owner eliminates it. He has a vavula that acts with the emptiness and lets the exhaust gases pass for the admission. A mechanic told me that in this sona (Uruguay) it has to be eliminated that system but another that is not, I am in doubt what to do. Fabor to pass where to get the mechanic manual.

Look if it is a pipe that goes from the multiple of admission to the exhaust with an empty valve connected with a hose wing of the Cervo emptiness, do not get over Drama many have it but do not work in the case of mine in a Ducato 2.8 and in a VW Polo Diesel, I break that vacuum valve and disconnect it from the hose of the servo. Cervo ,, works without drama, also as I mentioned the disarmament and in the union of the pipe just when it connects with the multiple of admission they had (the duchato and the pole) an original joint type that blocked it, I bone for more that valve andubiera did not serve anything for that joint that blocked the passage, greetings.