[Mike Croley]

The lower the fuel temp , the better . Just a few degrees won't make a huge difference in performance , but every little bit helps .
Restrictions in the fuel system will increase fuel temps , but not enough to cause a major loss in performance . Running the fuel line near any source of high heat will have much more of an effect .
As the fuel temp goes down , the density changes . So jet accordingly and then cool the fuel the same way and for the same duration before each run .