The turbo wont hold its boost, iv changed two main pipes the metal L shape one that joins to the rubber one with that stupid joint, then had it put on diagnostic's at skoda which found there was a split breather pipe, so had this replaced aswell, but this still has not cured the problem, now they are telling me that i need the throttle body replaced, but someone has mentioned that it could be the return vavle also known as dump valve could be sticking, would this be what is causing the boost to release still PLEASE HELP

Welcome to Briskoda, not sure on your query but sure someone will be able to help.

Hi and welcome aboard.

Welcome to Briskoda, you might want to post your question in the relevant Octavia section,

Then I'm shaw someone will have an answer.

Hello and Welcome to Briskoda

1. Sounds like your DV( dump valve) diaphragm has split, skoda one not expensive £50 with fitting easily under £100. and hi by the way

thanks to all for your replys so far and welcoming me on here still finding my way round the sight lol