Hi all, bit of a noob here, 05/06 MK1 FR TDI, recently cleaned out my disgusting EGR valve in the hope it would fix the lack of power I was getting along with smokey exhaust and disgusting smell when revving, to no avail, now thinking I may have to remove the manifold and clean all that or failing that an expensive job replacing the cat, I have been advised to remove the exhaust and if the engine gets power back I know the issue is the cat, if not then I should just need to clean out the exhaust manifold, anyone have any advice or run into similar issues or ideas on what else could be causing the complete lack of power (the turbo seems to be working although the whistle is nowhere near as noticeable,) thanks in advance for any help, Chris