Sard fuel pressure regulator

[jos 4 age]

Hi,
When I bought my car it already had a SARD fuel pressure regulator mounted. Fuel pressure is about 45 PSI now, for some strange reason it is 5 psi higher than a few weeks ago, but I did not change anything on the engine Unfortunately I do not have the manual for this regulator, does anybody know how it works if I want to adjust the pressure ? Looks quite simple but just want to be sure.
( cannot downlaod the manuel from somewhere .. )

It looks like this :


What happens to the mixture If I decraese/increase the pressure ?
Since I use an Omex ECU which is callibrated on the dyno I dont want to take any risk.

[domi]

If you have a gauge - just adjust the pressure - there should be an adjustment bolt on it. They usually have the top screw turnable - loosen it to raise, tighten it to lower. Do you have the part# for the adapter that goes on the fuel rail?! I really need that part number... =|

[jos 4 age]

Domi : I do not know which adapter you should use for your car, sorry.
Since I use the 4 age and this FPR in my kitcar.
By the way the upper union ( 90degree ) is not connected to anything on my FPR and you can easily turn it around.

[domi]

That's the one you should turn, then. And i thought the vacuum hose should go there. Rather - i'm almost certain it should. What adapter fitting are you using for that 4AG in the kitcar?