Bypassed my n249 however.........*Worrying issue, need your input please*

[GTi_James]

o dear mate lol, like said it could be nothing but too much pressure for the DV to take straight away, tried twisting the DV about yet? may be worth a shot?

[Nino]

not yet i will drive it gentle to work tomorrow and hope shes ok.

[Scott D]

pointless reversing the DV

doesn't look right how you've bypassed it as from what I remember when doing it (and this was 3ish years ago) all the hoses under the cover near inlet manifold are no longer used only the valve plugged in to prevent fault codes and blanking plugs on the TIP.

this looks similar to how it looked after the guide I used

[Nino]

Hmmmm

[golfyste]

What is your boost gauge doing?
Have you got the non return valve the right way round?

[Nino]

Boost gauge is how it was before if anything its showing that boost is holding rather than falling off and yep dwfo the correct way round

[golfyste]

When you let off is the pressure dispersing straight away?
Any kinked pipes?
If you don't have you sai or anything like tht you don't need that metal plate
I removed that and all the hard lines that you said you capped. Tidies up the bay nicely!

[nickellis1]

Sounds like turbo flutter.. I had this when my Bosch valve had failed, so because it wasnt dumping the air correctly it was causing the turbine in the turbo to stall which cAuses it to shudder making the fluttering noise, I then fitted my 007p with yellow spring and this rectified my issue

Eventually this issue will cause your turbine to fail and kill your turbo...

[Nino]

Hmmmm maybe i should change my spring from green to yellow? I noticed today while driving to work under low pressure the DV sounded how it should and would only flutter if i boosted 5+ psi

All pipework is fine btw 

[GTi_James]

change the spring then pal, as it looks like more boost is getting to the DV maybe uprating the spring would rectify this? strange how my standard DV didnt do this though