else than lift pump pressure,is there a gauge to check pressure to the vp44 and is this usefull or
only the pressure entering the injector pump is worthing something?

 

Only the pressure going into the pump. The output pressure is on the high side and itpulsates and would ruin any sending unit or gauge for sure and would probably cause a fuel leak. Plus that would also delay the firing of whatever cylinder you have it connected to thus causing a missfire.

 

I take my fuel pressure reading as close to the VP-44 as possible. I was told ( by Jake ) that it's the best place to take the most accurate reading.