Fuel temperature sensor and hello

[Rounded_nut]

2014 CM2350 X101, {big-name trash tuning} de-manded and branded exhaust manifold, turbo and cam. I've plugged in to the diagnostic and regardless of outside temp the fuel sensor is saying 32° F, now I know that just isn't correct and from reading on here it would seem to be a indication of a bad tune but to be sure I want to replace the sensor.....if I could find it. Does anyone know if it's integrated with the fuel pressure sensor on the separator?

The truck was like this when I started driving it, recently broken block (due to busted crank) so reman is in now. I've added a pyrometer and the boost gauge is the digital one on the nav display. Just last week the {big-name trash tuning} turbo blew apart so now new turbo and cac (duralite). And an odd thing, the fuel mileage calculation was always really close, this last fill up it was off about a half mpg. Around 30k on the reman, long term fuel economy is crud, I pull a cattle pot so it's not going to be great, but similar rigs are getting 6-6.5.

Anyways, hello.