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  1. a3mat

    What springs to run in wastegate and diverter valve?

    I am currently doing a GT2871 turbo project on the S3 8L. I would like to know which PSI springs people are using in the wastegate and bov/diverter valve with this setup. Current setup is... Rebuilt engine with forged rods. ATP cast manifold (T3). ATP turbine housing (0.63 A/R). Custom 3" down...
  2. a3mat

    What size turbine housing for a GT2871?

    I have an S3 8L 1.8T with a GT2871 setup currently running a T25 exhaust housing. I am going to change to an ATP cast manifold with v-band fittings, a custom made down pipe and a Garrett v-band turbine housing. I would like to hear what A/R size housing people are running with a similar setup...
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