Ok, so I swaped a USDM B18C1 into my 95 Civic VX the other day. FIrst i used the GSR harness that was on the motor. Wired up my knock sensor and O2 and it was running without throwing any codes. The only thing is that the MAP sensor was not hooked up. So i decided to use the Stock VX harness. Hooked that up and now my car wont even idle. Im thinking about putting the GSR harness back in but does anyone know how to wire up the MAP sensor? Is this even nessasary? The car was running fine without it, just felt slow. Im running a chipped P28 OBD1 ecu with skunk2 manifold (no secondaries). any help i would appriciate. thanks.