Its not cooling fuel like you probably want to lol. Its a trans cooler with an electric fan plumbed into the return right before it dumps into the tank. Fuel temp is a thorn in the side of a lot of fuel injected combinations that return fuel from the rails. The cooler does help, I do not have before and after fuel temp information because I didn't log temp when I installed it. I have seen fuel temp as high as 130* in the return worst case, 120 is pretty normal after lots of driving(drag week). There is better ways to do a fuel system and I need to reboot my setup but for now this helps.

There is guys on these drag and drive events that have to pack the trunk full of ice around the fuel cell to keep temps down. I don't have to do that!