I have a Xfire spoiler installed in my Miata currently activated using the over ride switch. I would like to try and have it activated based on speed as it is in the Xfire and looking for any information/advise on getting this done. The Miata has an electronic speedo, ABS speed sensors and an aftermarket ECU which may also be a source for speed sensor info. Here is a link to a short video

https://photos.google.com/share/AF1Q...xacWF4bms5elJn