Got a 27 PSI marine spring to feed my SBC that I'd estimate is ~400 FWHP. I have that spring in there and I'm now wondering what the best approach is to dialing in the fuel.

I read a LOT of mixed information on whether or not a VAFPR is worthwhile on a TBI setup. Should I get a VAFPR to bring AFR closer to stoich at idle or can I tune around without it? Idling pretty rich right now at around 10 or 11 AFR with the 27 PSI spring in there. Injector flow rate is setup in the tune as 91.

If it can be tuned without using a VAFPR, can this be done entirely on the VE table or should I be looking elsewhere as well?