DTAForum.com - a forum for the DTA ECU

I'm using a factory loom and reterminating the end of it with the S80 plugs.

The only new wires I'm adding are for air temp and MAP sensor as the standard engine doesn't run them. Do I need to twist them?

No

Thanks, that makes life a bit easier then.

And you could mount the MAP sensor local to the ecu if it simplifies wiring.