Wow - long lead times, only a good thing though really. I'd be interested to see the Vanish Tub breather system On the subject of intakes, Dave, I'm currently running the airbox you supply & fit and the car has been mapped at Emerald with this setup, but in the hunt for more induction noise (superficial I know!!), would there be any implications of moving to an open air filter such as below? http://product-images.qedmotorsport.co.uk/resized/vauxhall/c20xe/air-filters/air-filter-sausage.jpg I assume the fuel rail prevents the use of an off-the-shelf backplate, but other than mounting issues, would I need to worry about more serious things like AFR / a remap? In an ideal world, I'd like to have the option where I can have all the glorious noise on the road, but, if on a track day the intake noise is breaching noise limits I could have the option of a painless change over back to the airbox.