Infiniti Q60 and hyundai genesis

has anyone got any thoughts on how i should tune my Q60 and my genesis?? Ive never tuned a car before,usually i just buy the upgrades and leave it or download the set-ups but i want to be able to say i tuned a car.i have bought a few upgrades and to be fair the genesis is pretty good without me tuning it but i feel it needs a bit mor speed.the grip is good and i dont really want to lose any grip.i have also bought some upgrades for the Q60 based around handling i.e wheels,suspension,brakes etc and havent had much chance to race it yet.

also i should say that i plan on using these in B-class.

trying to stay in B class with these cars is gonna be tough. Been lookin for a tune myself…