I didn't mean to start an arguement with this thread, I just like to think of different ways to accomplish the same goal. My thought process was basically this-
Creating a full return system requires either modifying the existing rail or installing a different one, an afpr, and all the necessary plastic fuel line.
A dual pump setup requires you to plumb the FMU between the existing pump and fuel rail. Then loop the FMU around the inline, so the inlet of the FMU branches off from the fuel line after the inline pump and the return of the FMU branches off just before the inline. (stole from
A boost-a-pump requires the unit and tapping into one wire at the pump.
Now, the first two methods are well tested and work great, but maybe the third method will work as well, and seems to be much cheaper and easier to install. (600hp blown mustangs and vettes use them.)
I have the powertrain out of the mazda at the moment so any of the above would be cake. Still thinking it over.....