i just finished my swap just working out the bugs right now but i used a b13 engine harness but you will not pass inspection. with that harness theres like 5 wires to connect to get it running then you have to wire up the cluster theres a write up on the b15 forums on which wires to connect it was made by travis so good luck its alot of work
Any pics ? Did you use the 2001 SE cross member and the all mounts components ? I have the Gti-R engine harness but I just decided to go AEM EMS-4, its lets work. I just ended up a JWT ecu and FOrd lighten maf lol, no need for that anymore.