fpr question

[anchew02]

just installed my 255 pump and fpr... question is adjustment i have followed how to adjust vacum line off and plugged adjust to 37psi(1g) and its done. question is is the pressure suppose to drop to about 32 when vacum line is plugged back in?

 

[blkgst97]

Your fuel pressure will drop in vacuum. Mine drops 1psi for every 4inHg of vacuum. It will start to raise as you give it gas, once you are out of vacuum it will read 37psi and continue to raise with boost. Hope this answered your question.