We didn't over boost it at all we took the actuator that was on my first turbo that was only running 12psi and put it straight on your turbo after speaking to u we adjusted it exactly how u said and the vid u sent and was only running 5psi so shortened it to achieve 8psi and it was smoking like mad on tick over the unit itself looks rusty has hell so must have been left in the damp and something inside must have seized and all iv done is put my brothers turbo on it nd it's fine been driving round all day in it no probs running 15psi no probs