As you might know I've got my Disco up for sale, bought this from the UK and rather than sell it separate I thought I'd get it fitted anyway:

Land Rover Discovery Defender TD5 2.5 EGR Valve Stainless Steel Delete Blank Kit | eBay

Picked the car up today the manifold needed to be machined due to a slight warp which as you know is quite common, my God you can actually hear the difference!

Would highly recommend this product.