> > > > My 83 ur-q is detonating under boost at about 7 psi. The wastegate and > Design is 95/98 octane. > > -- Design is 95-98 RON (research octane number)In the US we use a different method,(R+M)/2 which yields a lower number.I think 95 RON = 92 . turbo turbo@steelcity.net