I HAVE A 93 LS AND WANTING TO DROP IN A B18C. IF I USE A STOCK GSR WIRING HARNESS WILL THAT PLUG IN directly AT THE SHOCK TOWER NO PROBLEM. OR WILL I HAVE TO RUN WIRES DIRECTLY TO THE ECU?

 

you will have to run vtec wires .. to ur ecu .. and if the gsr came out of a right hand drive car you will have to use ur stock wiring harness

 

If you have a B18C, You will either have to convert that motor to OBD1 unless the B18C is OBD1 but still you will have to adapt the harness to your 93' LS harness unless the 93' Integra is a GS-R. If it isnt, then you will have to add solonoid wires and all the other wires that control the VTEC system. Even modifying the 93' GS-R harness might be required.

 

if its a 94+ gsr harness i dont think you can use it without modification, because the newer civic and tegs dont have the same plug configuration as the da and efs. youll be better off using the ls harness and adding the vtec and iab wires.

 

exactly right

 

Yes I do have Vtec...came from the factory. thanks for asking.