plugs and coilpack change not the issue.
Use the search function for 'PCV', 'MAF', 'DV' or 'rough idle' to return some threads where similar issues have occured?
The DV is especially prone to fail. An upgraded revision 'D' DV is deffo worth the cash £46ish from a stealer or a pukka £100+ Forge Motorsport one.
Your fault sounds exactly like my misfiring problem. I've had the throttle body, and a coil pack changed and it hasn't fixed it - an OEM PCV and DV are next on my list.
Really, to find a decent Independent garage near you, is your best bet. My chap does diagnostics for nowt.
