Originally Posted By JRs_Charger
I have the 600 HP FItech, and an in tank pump, and use 3/8th line for both feed and return. The large return line seems to help keep fuel temps lower.

The 5/16 and 1/4 lines are a no go.


I have exact set-up, 600 HP Fitech with Spectra tank with in tank pump.
Added 3/8" line for feed and used existing 5/16" for return. Works perfectly.

Curious why you say it's "no go"?

Nice thing about Fitech is you can adjust the voltage to the fuel pump , PWM, to lower the fuel pressure if needed.

Last edited by cnxt; 01/27/18 02:40 PM.