I am pretty sure it is but want others in the know to confirm or deny.

Is it both vacum/boost regulated or other?

Trying to verify if I am using that regulator/lines I flatline my IFR table with all the same values.

 

It's both

 

So you just connect a vacum/boost source off the intake manifold? I was under the impression you could only put boost to it. Ive been running mine with a one way check valve.

 

It is Vacuum ONLY!!!

In Vacuum it will reduce the fuel pressure, and in boost it will be completely open or max fuel pressure which is about 60psi.
If its an adjustable one take the vacuum line off and set the fp to 60psi at idle then reconnect the line. It will then pull or reduce pressure at vacuum and you will see 60psi when in boost.

 

Strange, every 97 vette rail setup I have seen will decrease with vacuum and raise well above the 58 psi base with boost. When I had mine it would hit 68 psi with 10 psi of boost thrown at it. Maybe you had a different regulator on it?

 

Well then I stand corrected. Is yours an adjustable one with the set screw on it? What brand?

That was the way it was explained to me by the company that sold them, Eckler's Corvette Accessories. It could be they didn't really know

 

stock 97 regulator works just fine for vac and boost. I ran that setup many many years ago.

 

Thats what I thought Harlan, I was going off my memory of you doing it long ago.

Thanks for verification.

 

Is it 1:1 referenced though?

 

yes, stock regulator is all I had ever used back then and many others.