This maybe a noob question but like the title says. Will it work? Im swapping my S5 jdm turbo into my S4. Ive got a haltech E8 with a S5 patch loom and a S5 US spec turbo harness. I'm in the final startup phase and just remembered there is a body harness that plugs into the ecu, but wrong plugs. Can I get a S4 turbo US harness and swap the patch loom to a S4. Or should I get a flying lead harness. Please help im runnin out of ideas

 

The flying lead (when hooked up correctly) should work no matter what kind of swap you doing right?

 

i got the same problem and i was going to buy the haltech e8 because i dont have a full harness on my engine just a piece of it and i dont have an s5 ecu.

 

this is a full JDM longblock with manifolds etc?