I have been having this idea to put the gold heatsheilding on the fuel rails and regulator. This would be in conjunction with sheilding all the fuel lines. I wonder if this combined work would have an effect on lowering fuel temperatures, what do you guys think?

 

Not needed...

 

If you are worried about your fuel heating..then change the fuel system to run a returnless system. That way you aren't circulating the fuel slowly increasing the overall heat in the system.

Or use cryogenics