| now --it doesn't look like your passenger fuel rail is setup directly against the FPR. It looks like it's indirectly connected via the Y fitting off the fuel filter. I can tell you that if this is true, your rails will see different fuel pressures. Does it Y back before the fuel pressure regulator as you mentioned ? You don't need independent return lines from each rail. You should connect at the front of the rail via OEM and have 1 return line from driver's fuel rail to the FPR. 
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 Kid :" Those old guys drive that way ?"  Witness : "Yeah, I rode behind them at ZNationals 2010 on these back roads leaving the track day and they were foot in. They ran into the curves w/no brakes and didn't lift!"   - Hampton Inn parking lot at ZNationals 2011 -  |