While the request of diesel engine is recently increased due to its excellent fuel economy, the emission regulation becomes reinforced. In the case of EURO-6 that is started from 2014 and required 60% NOx reduction compared with EURO-5, It could be satisfied by hybrid system consist of advanced EGR(Exhaust Gas Recirculation) and aftertreatment system (LNT or SCR). Advanced EGR system have been used LP-EGR (Low Pressure Loop EGR) and HP-EGR (High Pressure Loop EGR) simultaneously. In this paper, we investigated the generation of condensate in inter-cooler according to LPL EGR application in TCI diesel engine.