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ur-q detonation

In message <> Staci Hemmerlin writes:

> My 83 ur-q is detonating under boost at about 7 psi.  The wastegate and
> computer are stock.  The boost will go as high as 8.5 psi.  I am running
> nothing but supreme fuel (92).  This has been going on for about 6 months.

Design is 95/98 octane.

 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club