It's not really necessary. The pressure is sufficient to feed 2 injectors at WOT simultaneously.

 

Hey, another quick question about taking the manifold off. How do I best remove the wires to the throttle body? I tried simply pulling them off but no good. What do I do?

 

you guys are making this way harder than it needs to be.
If you look at my diagram One Flow Path at a time (before and after mod) it is quite apparent what is happening.
The importants isn't so much the flow path as it is keeping the fuel pressure through the entire fuel rail the same. In a series system like the stock system the #3 injector has a lower pressure than the highest #4. However they both have the same duty cycle. By adding the extra line you equalize pressure accross the entire fuel rail and stabalize your A/F ratios in all cylinders.

Black is the stock SUPPLY line, filter and FPR
Green is the RETURN line

 

here you can easily see the FPR, ludespeed adapter, return line, new supply line and existing fuel rail.

 

and here's the F-shaped T fitting.... LOL

 

and that's it. That's all there is to it.
I just installed my parallel mod last week.
My turbo kit has been on for three months. I used to suffer from detonation in third and fourth gear. After the mod the detonation is gone. My best guess is that #3 was running lean and detonating.