AH FabricationsBadger5

aum powered a3 1.8t

  1. a3turbosteve
    hi just put a 30,000 mile aum engine in my 98 a3 all has been fine then it started to loosing boost its running 10psi but if you hold it flat out the boost slowly goes down and by 5000 rpm its only holding 6 psi i have been thought all the vac and boost pipes and brake servo pipe and had to replace alot of them it runs better now but still loosing boost any clues i have a feeling the piston dv that someone has fitted is leaking but not sure
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