I know it is a juvenile question but it has been so long since I have used a fmu on a car since I became a Hondata dealer that I have forgotten exactly which hose barb is for what.

There is an inside barb that is directly in the center and an outside barb. If my memory serves me correctly the center is the inlet and the outside one is the outlet. I am mounting it in an unaccessable place so I don't want to have to do it twice. Thank you in advanced!

 

the center port goes to the fuel return line and the offset one goes to the fpr.

 

THANK YOU FOR THE INFO!!!! I am building a custom turbo kit for a 04' lancer es for this kid. I guess it has been over a year since I messed with any fmu's and I just drew a blank when I went to hook this one up. haha I felt so stupid asking! :-)
Thank You again!