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Discussion Starter · #1 ·
What is the sensor that is attached to the factory fuel pressure regulator. It is in-line with the vacuum lines going from the manifold to the regulator?

Can this sensor be removed when upgrading the fuel system?

Thanks
 

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Discussion Starter · #2 ·
I think it is the factory fuel pressure VSV.......Is that needed with upgraded fuel system (boost logic)?
 

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jamiep said:
I think it is the factory fuel pressure VSV.......Is that needed with upgraded fuel system (boost logic)?

I removed mine and have been running fine without it. Kean also told me its not really needed.
 

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T88 YOU
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its actually a fuel pressure vacuum modulator, it basically works the same as the fuel pump ecu, it lower fuel pressure at idle and low load and raises it as you step on it, usually you remove it any time you upgrade the fuel system.
 
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