After buying this off a member from here, I've decided to part with it and use the money for a remap instead. It makes an incredible Dumping sound but performance wise I don't think you gain anything from it. I have a new hose that comes with the dump valve kit as the previous one seemed to be faulty (there was a lot of flex in the hose). The new hose fixes the problems I was having and as usual FORGE have an incredible customer service.
For any warranty work, a receipt is not needed. If it's their products, they will do their best to fix it.
I paid £110 so im asking for no less than £100 + postage which would be around £4ish second class delivery
Thanks for looking

Jay