ok so i had the coilpack and leads changed and this made my car run better. For around 2-3 days max. then i got engine light and had it plugged in and was p1518 that was the imrc so ive had it changed out for a known working one and problem has got better but not i have a idle rev problem. If i take it out of gear whilst moving it revs itself to aroun 4-5k revs. if i put my clutch down it drops to aroun 11-1500 revs. when i start the car cold its idle is at 2k and drops to around 1100 lowest.

any ideas?