keep the original offsets even with your '93 injectors. they're similar injectors and they're close enough.

gm dicked with those numbers a lot (and the low pw offset adder) to play with lower rpm afr, they aren't even close to real offsets for those type of injectors.

as evidence, note injectors for a 'vette are an identical part number, running identical fuel pressure and all that, but the offsets and pw adder tables are different. the vette also has its initial BLM set to 120. you can drop all the afr variables including maf table from a 'vette tune into an f-body bin and it'll be good to go, but if you only take the injector offsets and low pw adder from the vette bin without compensating in blm and maf table it'll go haywire (i tried for fun...)

this is why sometimes plugging some 'perfect measured offsets from the injector mfr' into an lt1 ends up throwing your afr WAY off, and you end up having to tune around it, and some very similar types of injectors have published offset sheets that are very far off from what's in the stock bins.