Boost Problem.

[Sam@xtreme]

Just wondering if any1 can help,

1st, 2nd & 3rd the boost is fine but in 4th & 5th it will peak at 20psi and the boost drops right off and feels really flat!

Any ideas any1??

 

[ibizacupra]

sounds like soft limp 5psi moment

 

[Sam@xtreme]

yea it is.

 

[ibizacupra]

got vag-com?

boost deviation?

 

[chris999]

n75, same symptoms as mine

 

[Sam@xtreme]

Vag-Com says N75 Valve ..

There pretty exspensive rite?

 

[Black TDI Turbo]

£50 give or take depending....

 

[stevegti6]

Just wondering if any1 can help,

1st, 2nd & 3rd the boost is fine but in 4th & 5th it will peak at 20psi and the boost drops right off and feels really flat!

Any ideas any1??

mine does the reverse of this 1st 2nd is flat but 3rd 4th 5th is fine it does depend on load on the engine my problem sounds like the complete opposite to yours

 

[Sam@xtreme]

Prob the same mate, N75

 

[Quikie]

I had this prob, changed n75 and still no different, so chances are my standard n75 was working dead on, I put on a J valve but not sure what difference it makes, if any one is interested in the satndard one i have pm me

 

[Sam@xtreme]

Is a J Valve same thing as a Bleed valve?