Smoke in cabin under hard acceleration

[MRLSICAPRICE]

Hi guys just wanted some help,i own a 04 wk caprice ls1 it is maff tuned has otr pacemaker extracters sports exhaust two days ago it started smelling like fuel and a bit of smoke would enter the cabin after abit of hard acceleration thought it could be blocked cats I put another pair of high flow ones on and it is still smoking and is chewing fuel it's tuned to 98oct and it has chewed nearly a full tank yesterday could charcoal cannister have anything to do with it any help would be much appreciated plz thanks

Sorry smoke is blue/white smoke apart from smoke issue it starts runs and drives fine

 

[Fu Manchu]

Stuck injectors. Sounds like one or multiple injectors are staying on.

 

[Fu Manchu]

Go to 2:12 to see the smoke.

Love this guy’s fault finding processes.

 

[MRLSICAPRICE]

Stuck injectors. Sounds like one or multiple injectors are staying on.

Thanks man ill have alook at injectors had a mate tell me could be valve stem seals but i doubt it could be hopefully