Not my car but the things that have already been checked:
phase sensor condition and gap:0.2mm
Plug gaps: 0.6mm
New rotor arm and cap
New leads
CPS gap 0.8mm
Car will pull past the 4000rpm but appears to misfire until through.
car is running greens and a chip, boost is currently 20psi peaking at 22psi.
Headgasket has recently been changed.