which line is the return line on a 350 TPI car anyone have pictures im getting ready to hook up an FMU I just want to make sure I have the right line....

 

Supply line goes into front end of the pass side fuel rail ; return line comes under the intake from the reg at rear

 

This is on a 91 z28 350 tpi seems like the fuel lines are on the drivers side...not passenger side.

 

Look closer

The lines turn and EXIT to the drv side ;
but they still enter the fuel rails at the same location as stated

 

Ok I think I got the right line its the smaller of the [2] I hooked up the FMU to the smaller of the two i think that's right problem is the FMU isn't raising the pressure up to much maybe like 50ish psi I would think it should raise it a lot more then that unless the rate isn't that high...im wondering if I shoukd buy a fixed rate 8.1 and take the procharger one off....

 

Did you consult any supercharger Co for advice as to what rate FMU to run for your combo?

 

From everything ive been reading 6 psi 22lb injectors I should be using a 8.1 ratio FMU this is a procharger FMU I think adjustable from 1.1 to 12.1 well I don't think its working because I only saw a little increase in fuel pressure under boost...Im wondering if the FMU is no good maybe the disc is dry rotted can I use a vortech rebuild kit and get a set rate of 8.1 or should I just buy a new one that is set for 8.1 ??? im lost here car is still lean under boost weird thing I had the adjustable regulator set to like 55 psi under boost it went to 13 still lean but with the regulaor set at 40 and the FMU is only went to like 50 and 15 on the air fuel gauge weird telling me its not enough fuel pressure...telling me the FMU cant be working right....