Got the plugs on ebay, genuine ford RST's.
I've just put a tempory closed loop on the turbo to remove the control of the amal valve. So it could be amal valve or chipset problem. But now it holds 13/14psi right to the redline in every gear. Doesnt cut or hesitate etc.
Waiting on some further advice, but rather than spending money on a new amal i'll just remove it and go with an Apexi.
