Originally Posted by 70GS455
From what I understand, you do have one, just don't know it
According to posts by waldig (IIRC), the vent port on the regulator will double as a reference adjustment port. So if you were to connect a rubber hose to it, then the other end to a pressure source say a bicycle pump with a gauge, and put 10-15 psi air on it, the rail pressure *should* rise accordingly. Then you should see some movement in the trims.
You read my mind, I'll set my air compressor regulator for a few pounds and and raise my pressure. I all ready have split my fuel rail and have -6 pushlock hoses run but have run out of mod money for a while GRRR.
I'm sure my unusual fuel setup is changing things, I'm trying to decipher what my gauges are telling me.