Come on, we have discussed this to death.
Stock head stock pump never does 270bhp
For anyone who hasn't seen it, we are running GTB2260, CP3, Intercooler/Hardpipe, Swirl Flap delete, Revo TFSI Intake
At around 250bhp lambda gets stuck at 1.1 - out of air.
With v26 ECU Tune we ran 255bhp and 435ftlb - see my build thread below for further details. Flatline at 255bhp from 3000rpm to 5000 redline.
Lack of airflow causing restriction.
Myself and Mac are both pushing these engines. I believe we will be both over 300bhp soon.
We both have ported head, cams, bigger injectors, etc
My build thread will be updated when we have fitted the head.