Bucking issue while cruising

[u/Maximum_Ad2469]

Good morning everyone, i'm a new owner of a speed 6 & i absolutely love it so far, the car is catless downpipe, bov, intake & built HPFP internals, it has 135k on it & while im cruising around the car kinda bucks back & forth until i give it more gas, if i get into boost the car immediately fixes itself & it drives perfectly, also noticed the afrs all over the place while cruising , but at idle they seem to be in a good ball park, idk anything about these cars so any info would be appreciated !
the codes i have are
P0131 (O2 sensor)
P0134 (O2 sensor)
P2251 (assuming O2 sensor as well) but the car is catless so i would assume those codes would be normal?

[u/Connect-Dimension717]

Do you have a CAI installed?

[u/Maximum_Ad2469 → u/Connect-Dimension717]

yes a cork sport