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...
Yes it already has an external waste gate but I will change to a 38mm Tial one as my current one is 2 bolt flange fitment.
Tial make a 0.64 exhaust housing too!
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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