William MK2 Cosworth

Hello again, I just opened my ecu to have a peek inside to see what chip it has.

What I found is a sticker plastered on the chip, that has the following written on it in red pen:

CW 4X4 SP 5.0 lB
APS Ř5 - 4.3b

On the first line the last caracters might be l8 as the ecu is a L8
Pretty sure that the APS 05 refers to a 3bar MAP.

If so, is there anyway to know from these gibberish what injectors the chip is for?

Thanks