[750hp]

The more throttle you use, the less fuel gets returned to the swirl pot, the remaining fuel stays cooler. Win - win situation !

The guy that dynoed my motor also builds V8 Supercar engines. They've datalogged fuel temps (using more than one big Bosch), and they've never been concerned about it. I've seen some billet fuel filters that have the heat soak fins like amplifiers. That'd make a small difference, alloy fuel lines might dissipate a little, but overall I wouldn't be too concerned.