2012 chrysler 300C V8 5.7L RWD

Wondering where do i make change for my performance part (oversize piston and short header) I get combine ruffly 1.5% more air and flow. Im not sure where to ajust for the tune ? Do VE Bank 1 et Bank 2 is where i make change ? NN dont relate on VE table but more on Aircharge and PRatio right ? So im confuse ....

--------------------------------------Modification-----------------------------------------

BBK Shorth Headers 1 3/4"

Oversize piston 0.75

Push rod wall thikness 0.080

K&N Filter in OEM box

The rest is STOCK