Any updates guys….

 

What would there be an update on? The OP clarified that his issue was solved 2 years ago by removing the stock GS300 FPR from the fuel hanger assembly.

 

both gs and aristo pumps have regulator….

 

True. Aristo regulator is located on the fuel rail. GS300 regulator is located on the fuel hanger assembly.

 

The aristo has a regulator in tank as well. Ppl usually crush the outlet and the piece housing the diaphragm as well.

 

Twin turbo Aristo hanger assembly does not have a regulator in the tank. It has a venturi / syphon valve present to pull fuel from the other side of the saddle tank. It looks similar to the GS regulator valve (which also siphons), but it does not regulate pressure at the fuel pump hanger / housing. This is done at the rail on the Aristo.

The GS (or non turbo aristo) has regulator built into the pump housing because it uses a return-less style fuel system. The turbo Aristo has a return line and so regulation occurs at the rail where pressure would best be measured.

 

 

I'm not here to argue with anyone. I'm here to share knowledge with the community, and as needed, stop the flow of misinformation where I see it. I believe through experience with both of these hanger setups that my information is accurate. That picture provides no proof that pressure is regulated on the Aristo hanger. Just because things look similar, doesn't mean they are the same. Ask yourself this question - why would it make sense to regulate pressure at two different points along the same fuel line?