are these sold separately without buying the boost pipes itself?

I'm thinking about the EGR to I/C and I/C to turbo.

My bottom IC pipes are quite oiled up and looks like it has a minor leak. Plus Nick from r-tech advised me to check/replace them now I've had a remap from him.

U can buy + replace the seals..

U get em from skoda n there cheap as chips..

If u have a leak tho it might be the lugs failing on the pipe so id change the seals 1st.. then check if its still leaking in a few weeks

Do the sizes differ throughout te system or are they all the same on each join?

Do the sizes differ throughout te system or are they all the same on each join?

Some are the same + some differ.. if u go to a main dealer they will show u the picture on the parts computer + u will be able to work it out from there bud

The pipe clips are different on some of the connections too.