im in the process of building my escort 1.8 escort zetec turbo, basicly the spec is erst turbo t3 and manifold, decompression plate, 2 st170 head gaskets, standard inlet ( got to get frst rail and injectors ) OFAB ecu and loom, my question s amongst others is do I need to put lamda in the down pipe if so can I re use the escort 1.8 one