...still getting a bloody insufficient air-flow error up. Took out the valve and used a whole can of carb and intake cleaner cleaning it out until there was no crud left at all. Dropped it back in, tightened it all up and cleared the fault code. Took it for a spin and all seemed fine... couple of starts later and the emissions control system light is back on the dash grrr. Anyone else any experience of this? Are there any other components that could be bringing this error up?