I have been trying to get this set up to work without success. Have any of you guys got this working on your 986 or 996? A screen shot of your custom sensor would be great. Also I have the purple wire coming from the fuel,sender connected to the red wire coming from the Iron Canyon device, but what about the brown wire coming from the snding unit? Is that a ground?

 

Call Mark Nichols at Iron Canyon, he is also an AIM dealer. He setup my dash and calibrated his fuel sending unit. He is very helpful.
http://www.ironcanyonmotorsports.com/

 

I spoke with Mark today and he was very helpful. Now I just need the data for the custom sensor. Not easy to empty the gas rank on a boxster (or a 996)

 

good luck