Intermittent Turbo boost?

[DBXdarkangel]

Hey guys.
I was just wondering if anyone has come across a similar issue. Ive noticed sometimes if i floor the car there doesnt seem to be a big kick in the back from boost but 80% of the time its working fine. I had to diverter vavle changed for a oem one from awesomegti so doubt its that.
Ive also run vag-com with no fault codes. Would a sticky actuator cause that?

Any ideas would be appreciated :)

[Shamm]

I have the same problem but i think i need to change my dv and btw which dv do you have

[samiul11]

I changed my DV to the rev G and it fixed the problem 

[rich83]

Any mods? Maps?

[Markis236]

I had a similar problem and I found it it was my ore cad holding the turbo back when full throttle changed the down pipe to a decat and no probkems since

[DBXdarkangel]

Its completly standard. No map's or mods.
The diverter valve is "OEM 2.0T Diaphragm Type Diverter Valve 06F 145 710G"

[lukemk5gti]

Its completly standard. No map's or mods.
The diverter valve is "OEM 2.0T Diaphragm Type Diverter Valve 06F 145 710G"

The final letter on the part number determines its revision.  In this case G which is the latest diaphragm type.

Unless it was fitted poorly (doubt it considering a reputable company installed) then it could likely be a pipe coming loose or splitting at a joint.

Either do a visual or ideally a smoke test for leaks

[Shamm]

@lukemk5gti how do you do a smoke test

[DBXdarkangel]

But surely if it was a leak then it wouldnt boost all the time? Its fine most of the time just a few times terea no boost

[rich83]

Could be an intermittent fueling issue. You need to log it really.

[DBXdarkangel]

Could be an intermittent fueling issue. You need to log it really.

How do u log it?

[rich83]

You need someone who has VCDS diagnostic software

[DBXdarkangel]

You need someone who has VCDS diagnostic software

I have a full version of vcds but only ever use it to read and delete codes. I was wondering how i can use it tonlog furl.and turbo boost in live logs

[ROH ECHT]

If you see boost actual matching specified but it does strange fluctuations up and down and doesn't produce the pressure it once did...likely going to be the N75 boost actuator valve. This is if all else is fine...so you have to look at the DV and for boost leaks first.

My N75 was replaced because my boost would only reach 18 when 24 is normal and then would suddenly drop to 10psi and finally climb up to 15 or 16psi again. Others see similar behavior and not always the exact pattern when the N75 begins failing.

[DBXdarkangel]

Is there a way to log its behaviour using vcds?