What ethanol sensor are you using?
Post pics of your install if you don't mind.
I'm also getting a Holley efi HP system installed as we speak. I'd like to play around with flex fuel capabilities down the road.
Here are pictures of my fuel lines installed.
I added some rubber fuel lines to areas where I thought it would rub and maybe cause issues. I also added some heat shielding above the muffler and on the return at the firewall. Probably not needed but it can't hurt.
The emergency brake cable...
I am in the process of installing the Racetronix teflon supply/return lines, 525lph Hellcat pump, and hot wire kit. The tank is dropped and fuel pump installed.
I've removed the small section of factory supply/return lines at the back of the car. The section that starts above the axle and