i have a B&M command Flo FPR and a walbro 255 intank and Type r 310 injectors W/ a vortec FMU, im reading 42 PSI at IDLE. I heard prior to install that with the FPR and Walbro i wouldnt be able to get the pressure back down, my question is is 42 to high at idle? i have the FPR all the way down. It runs GOOD witht his setup but my A/F gauge does no good cause it bounces around like crazy all the time anyway. Does this setup sound like it would run lean on 5 pounds? its a D16Y7 BTW Thanks

 

get a wideband and find out for sure.

Also do you have anything controlling the 310s? Any other sort of management.. if not it will run rich,

 

im not running any managment just intank, FPR, FMU, Bigger injectors,missing link. I have RC 550's i just had to get the FPR and pimp in to save money on tuning and all that Neptune on 10 PSI

 

dunno bout the first question but you can drill that B&M with a larger return hole to be able to lower the pressure. endyn has a writeup on it.