Your PROBLEM is the AFC. It'* a diagnostic tool to be used to gain data in order to have a custom PCM burned. Additionally, your injectors are FAR too big for your application, causing you further issues.
If your injectors are properly sized, your PCM can still adapt with minor tweaks. The tweaks I use are from an AFPR. By increasing the pressure, the effective lb rating of my injectors increases, and I benefit further from better atomization of the fuel. This is why I'm still running stock injectors.
In addition, besides your horribly oversized injectors, your FPR is only a 2.7bar regulator. Only the 94/95 L67'* got it. Which puts you at a further disadvantage with your injectors being too big for your application.
There is no power to be gained in going larger on the injectors unless you're outflowing your existing injectors, which you are not.
I ran a 2.0" pulley with zero KR last year on stock 29lb injectors. I don't have to make any changes to my fueling when switching between the ranges of 2.5-2.0" pulleys. Your PCM should be able to adapt to it if your injectors are properly sized for your application.