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I have removed the flaps from the inlet manifold. I need a bit of help. Can you remove the flaps inside the engine too or do these need to stay in? I'm having a remap so any codes that come up wouldn't be a problem.

I'm doin mine on Monday and will be removing the tumble flaps
How've you gone on removing the manifold flaps ?
Did you remove the core plugs and where did you get them from ?
Pics pics pics pics please

I have had it done at a local garage and it's still there for a decoke. I will take some pics when I get it back. They have taken out the core plugs and welded the holes somehow. I will get more info tomorrow. Some of the core plugs were very loose so I rather not have them at all as I don't need them now. What do the tumble flaps do? Will it make a difference removing them? Are you doing a decoke?

Yep doing a decoke on Monday - got everything ready including core plugs.
How did they manage to weld the manifold its aluminium ?
I don't fancy the new plugs coming out either but not sure if i would weld the holes

Yes they have welded the holes. Why is aluminium a problem to weld? I wil post pics later. It's all done now jus needs a map tweak. Who is going to map yours? I will post pics later.

Aluminium is possible to mug weld - plenty of track/race fuel tanks are aluminium welded.

However I wouldn't weld a point that is so likely to suffer heat stress.

There nothing fundamentally wrong with core plugs - they've been used for years all over the place.
As long as they are the right size and material. The holes *should* be slightly tapered in doing they do work loose they should have the tendancy to pop out than in.
(my dad use a wooden dowel as a temp repair job once)
Ones with the top hat are probably as far as you'd want to go.

Heres some pics

Nice job Eashan

That does look neat and completely removes any risk of the engine ingesting a core plug. I'd be worried however that the heat from welding could distort the manifold's mounting face, making it impossible to get an airtight seal.

Dave