Just after a bit of info or if anyone has come across this.

When im going up the rev range from say 4k upwards the car is holding back and wont rev to the limiter. Ive swapped the coil pack over off the wifes focus and its still the same. Ive also tried plug leads of my mates car.

Also ive used his maf sensor too. Ive had my imcr apart and cleaned the connector inside. Ive got no engine lights on and ive tried my mates fault code reader on the car and there is no faults.

The car had new plugs when my mate had it but i dont know yet if these are at fault.

Im waiting for a fuel filter come to eliminate that.

When the engine is warm should the imcr pull the flap in the manifold open?? Cause mine isnt. I need to try it when the engine is cold. When i turned my ignition on with warm engine om getting a live to both wires to the electric motor in the imcr? Is this correct?