The Evo uses a yaw sensor as part of the AYC rear diff. Unless Subaru just developed a technology like that without a whisper to the aftermarket community, The '05s don't have that. That means the yaw sensor referred to in that email is actually the lateral G sensor used to tell the DCCD to send torque bias rearward. I can bring my DCCD G sensor to the meet next week asuming I pick up my stuff at S-Squared.