Hey everyone, I need some help. I am putting a USDM 2001 b18c5 (type R) engine into my USDM 2001 Integra GS-R. I do not have the usdm b18c5 harness but i do have the usdm b18c1 2001 integra gs-r harness. My question is this.. Can I use my 2001 usdm B18c1 GS-R harness on my usdm b18c5 engine? I plugged it in, but there are a few differences here and there due to the different intake manifold designs. I am trying to figure out how to connect the iacv, iat, and evap. Do i need to modify the harness? thank you.