Welcome. Rust will be a big concern on cars that age. Rear arches are highly likely to be on the way out. Bear in mind they rot from the inside out so if any is visible then alot will be hidden behind it, don't be fooled by someine claiming it's only the odd bubble of surface rust.
sounds like headgasket 😞 as soon as you put any boost on water gets blown through, so while off boost wont be anythign happening, assuming im reading hte symptoms correctly.
have a sniff test done and see what the results are
as said, if your replacing the pistons and rods then may as well get the 2.1 kit, only difference it the crank. there's no repalcement for displacement as they say
Always advisable to remap an import, need to run it on 99ron, vpower or Tesco.
Best bet give a tuner a ring and have a chat with them, they will be able to advise on how to go about it and costs
Changing the exhaust will change how it sounds not just the volume level, so it Sounds like your just getting more noise from the turbo.
If its been checked out then I would assume that's what it is and just keep on ear on it to see if it changes.
So cars done and i picked it up 😄
Managed 330bhp 360ftlb. Pull really strong all the way throught he rev range 😄
Forgot to pick up the graph so shall get that next time im up lol
Turbo is maxed and injectors are at 95% so next step in a few motnhs is prob gonna be swap those out and remap to see what it gets too
Onto plan B, dropping syvecs for now, price was gonna be more than expected due to sensor pack and also delayed things time wise which i can do at the min (need my car back for work by monday)