GM Fuel Sensor & FAST EFI

[Hot Air]

Has anyone installed a GM fuel sensor into their fuel system and integrated it with their FAST EFI so it will automatically adjust A/F and timing to run whatever fuel may be in the tank?
Conrad

 

[novi2000]

I have the GM sensor installed with the XFI. The car wsa originally tuned on E85 when I switch to 93 octane I can see the Energy Constant change however the tune is REALLY rich which makes this solution pointless. I think the thumb wheel is a better option and just create 2 tunes.