boost leak

[vw754]

can i check (if so how) if i have a boost leak on my a3 2.0 tdi? (well i think i have)
i get a hissing at around 2-2,500 rpm before and after that range it disappears
i have latest version of vcds.

 

[rabbituk]

Hi,

I have a seemingly similar issue with my 2006 2.0 TDI lump. I haven't noticed a loss in performance or economy. After recently purchasing a VCDS cable I did the boost test as described here...Ross-Tech: VAG-COM: TDI VAG-COM Info

There's a link to my results in this thread here.

It'd be interesting to see what you get. The results on the Ross Tech website are for a 90bhp engine. I've not been able to source any known good boost data for comparison.