From the factory the differences are quite comprehensive.VNT1749VC turbo with improved impeller and inlet housing with more precise vane controlTop mounted to allow for DPF over 140 without Improved water jacket around uprated Siemens pizeo injectors and exhaust ports - these Siemens injectors are dying left and right though!Ceramic glow plugsCTC toothed belt sprocket on the camshaft - it's oval to reduce belt tensionsImproved head gasket to both strengthen head and improve combustion chamberValves recessed flat into head allowing removal of valve pockets in pistons, improving swirl and compressionImproved oil separation system in cam coverUprated "hotdog" style EGR coolerForged and lightened crank with 4 counterweights instead of 8A balancer shaft in the Passat level carsSwirl flaps in the inlet manifold, improving swirl and flow across the rev rangeA new electric EGR valveSourced from the VW service training program 368
I was looking at getting a GTD golf but i see that there is alot of probiems with the PD 170 injectors do they use the same injectors in this engine or have they changed them