I hope to not sound like too much of a jackazz here , im kinda in the same boat with spooling my 96/1.32 . note I do have a tight converter . on just fuel I get NO boost at the line . rolling start I see around 2PSI at the top of 1st and mid through second it picks up to 30 and by 3rd im up to 45+ . that being said on fuel AND propane , I can make 10PSI at the light and by the time I crack 2nd im already at 40PSI . so I can say running a little C3H8 helps quite a bit. on the flip side of the pre-turbo injection mentioned above , ive been thinking of adding a second stage of propane to inject in the exhaust . just haven't figured out if there would be enough O2 in there to ignite it ?
SO - back to the OP , propane works well for that little extra spool , AND I use it on my daily rig , so contrary to popular belief its safe to run