Hi guys thanks for your replies, yes it's genuine, and I have tried to clean it but it doesn't make a difference, car feels sluggish with it connected and surges at low revs and runs really rich as it gives me the fuel bank to rich code, and misfires when on tick over. All that goes when it's disconnected, I've recently put a creation motorsport intake pipe on but that's it, I have a silicone reducer on the maf with jubilee clips connected to s2000 filter, its always done this ever since I brought the car, and if I replace the maf, it's fine for a few days then starts again so I disconnect it and problem solved, but it's a bugger to start from cold with it disconnected but when it's up to temp it's fine
Cheets