RomRaider

I recently bought a 2003 wrx that had a blown up ej205 in it and replaced it with a ej257. Still the 2.0 heads and all other components. It’s on delicious tuning flex fuel and a 16g turbo. Most of my tuning experience is with mega squirt in which you could easily adjust the cubic inches of the engine to scale properly. The car is running lean and having a af correction of 25 at all times at idle or under load. It will not meet the afr targets. Just wanted to see if anyone has a way I can adjust that or if there is something else I should change to get it to meet its targets. Fuel injectors are 1050’s by the way with aem 320l/h pump