Overheating when driving and gas tank building up pressure

[urmyboyblue]

Did you check fan rotation to see if it is blowing or sucking?

I happen to read a little about the FI Fuel command center. It is capable of feeding 800HP. At road speed, you are making 100 or less which means a lot of fuel is bypassing back to the tank. That is your source of heat in the fuel. Unless you can turn the pump down with an electronic controller, you may have to go to a smaller pump. Also- does the return return the fuel under the fuel level or just allow it drain back into the tank. If it just empties into the top, it will cause aeration and pump up the tank more than just heat will. You need to return fuel under the fuel level.