Originally Posted by beamo76

can anyone help?
i have bought a s2 erst and it seems to be overboosting as when i drive it and push it hard it seems to be all noise and no action.
the car pulls really well in first and second but when under load in third / fourth /fifth its poor.
is there any quick thing i can do to see if it is over boosting and should i disconnect the amal valve to protect the engine?
car is going to be set up by nms on the 18th sept but would like to try and diagnose the problem before taking it there.
thanks in avance