Hi guys
I've got an escort rs turbo series two 1988 spec.
when you drive it and get to 3000rpm i9ts like you hit a limiter it wont rev the turbo boosts at 0.6 bar and holds nut theres no kick .
been told it could be the boost pipe collapsing but the one from the metering unit to the turbo has a metal pipe spliced in to it half way.Is there anything else this could be?

need help getting desperate??