The good news is the hesitation/flat spot I had has all gone :yes:

It was that split hose after all, it only cost about £13.50 from my local Audi dealer and about 45 mins for me to fit

I removed the old hose and it looked like this :-

Driven about 12 miles since and no hesitation at all and it pulls much better now too so I think this was the reason for the low rolling road figures too

The bad news is that the fuel is not going to last as long now as I am driving everywhere WOT !!

Good to hear you got it sorted Nick, I am going to have to check mine at some point, cars not remapped so they're not under much stress but I've never bothered checking them and I suppose I should! Is this hose easy to get off once you've got the bracket and pipes in from of the inlet mani out of the way?

its also worth fitting an extra check valve into that pipe as the crank breather one gets really cr4pped up. this is what I did

I just got rid of that hose all together when I fitted the catch can!

Hi Nick, do you have any tips on how you removed the clips to get that hose off?

I finally got round to checking my vac hoses and I have a split in the 1cm one that goes from the valve at the bottom of the S-hose you've pictured above to the inlet manifold (the blue hose circled in red in picture below)

It looks like it's been split for months, or even years, doesn't seem to have made a blind bit of difference to the performance but hey I'll replace it anyway. The only thing that bothers me is there's too many other hoses in the way (for the N249 and N112) so it's going to be an ar*e to get the clips off, and those clips are bad enough to get off even if you can get to them!

Any tips anyone?

Edited 28 August, 201015 yr by chicken_eyebrow

Hi Nick, do you have any tips on how you removed the clips to get that hose off?

I finally got round to checking my vac hoses and I have a split in the 1cm one that goes from the valve at the bottom of the S-hose you've pictured above to the inlet manifold (the blue hose circled in red in picture below)

It looks like it's been split for months, or even years, doesn't seem to have made a blind bit of difference to the performance but hey I'll replace it anyway. The only thing that bothers me is there's too many other hoses in the way (for the N249 and N112) so it's going to be an ar*e to get the clips off, and those clips are bad enough to get off even if you can get to them!

Any tips anyone?

I find using a small thin screwdriver to slot in between the gap of the top of the clip then twisting it sideways to expand the gap you can then use either the same screwdriver or a second screwdirver to pop up the clip and it will break past the locking point.

Thanks mate, I was thinking that might be the best way. I might remove the battery too to make access a bit easier.

I find using a small thin screwdriver to slot in between the gap of the top of the clip then twisting it sideways to expand the gap you can then use either the same screwdriver or a second screwdirver to pop up the clip and it will break past the locking point.

Thats how I did it too.

Yes it is a bit tight with all the other pipes in the way but it can be done

just remove them all problem solved and you wont have the same issues over and over again and with a catch tank it will ensure longer lasting turbo intercooler etc etc

for £100 you can fit a catch tank remove all the pipe work that causes all the issues and replum the n249 etc etc clean the engine bay up stop ongoing issues and in some cases make the power delivery alot smoother

dont know why people dont do this as it has been tried and tested and proved to be the best way to go about stopping ongoing common issues

Agreed. But not everyone wants an engine bay full of non-standard pipework.