The present invention provides a process for preparing amino functionalized diene polymers with 1,4-trans linkage content equal to or greater than 70%. The engine has both a dedicated EGR loop and a low pressure EGR loop. The whole circuit design step enables to wire external wirings across the macro by passing through the internal wiring prohibiting regions of the macro and to configure the buffers as repeaters which are connected with the external wirings inside the buffer allocable regions of the macro.