The car has had a second hand engine fitted. Starts fine will drive ok up to about 3500 revs.even when ecu has no codes it will not rev then a short road test and the eng light and traction control light comes on and the code are p1300 cylinder 1 igniter circuitand p1325 cylinder 6 igniiter. when you rev engine and hold full throttle it surges around3500 and pops back in inlet manifold.i have scoped cam and crank sensors and i cant see the vvt altering the inlet cam.i scoped the coils all signals are present any suggestions appreciated.i will get engine code and post it tomorow.