In a decade of EFI use I've run an external Walbro 255 and it's been just fine. On an all day drive it does get a little loud but never left me stranded. 43psi.

*edit* 43psi is for my classic FAST controlled 383, not for a Gen III, should have made that clear.

Last edited by furious70; 05/01/19 02:24 PM.
70 Sport Fury
68 Charger
69 Coronet
72 RR