I found this rivet fix on the VW forum board their SAi is very similar to ours. Not quite sure how or if this fix is needed but I did remove my old rivets on my spare SAI pump and it was evident the rivets were both soft and loose. In my case the egr valve on driver side leaked down and did not function properly so a backfeed of exhaust gasses (and condensation) may have shortened the life of my wife's new SAI pump.
Anyone with a hand operated mighty vac can test the value of their egr valves
it is very easy wish I had done this prior to fitting new pump.

Interesting link from VW Forum

http://forums.motivemag.com/zerothre...3820606&page=1

Interesting link from VW Forum

 

Anyone have comment?

 

That is great. I dont know of anyone that has had this problem yet. I have had to replace the filter but that was it.... Thanks!