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Finally, WG diaphragm has has a rip :(

Hi All,

After a period of fun time driving my Audi with 1.5-1.6 bar last couple 
of weeks. I've finally realized where is that 1.5-1.6 bar came from. I 
took the wastegate cap off this morning and found the diaphragm has a rip 
on it. I think this is probably the cause that increased the boost on my 
Audi, 'cause it used to had 1.4 bar max with the shims. 

So, what should I do? I know there is no way that I can get a new 
diaphragm. Is there anyway I can lower the boost a little bit? Can I 
take the WG spring off?
I really don't want to shorten the life of the auto tranny and experience 
the fuel pump cutoff anymore. So, I would really like to have some 
assistance on this subject?


'87 5kcst