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gt-a boost low

  1. Engine / Turbo
    Hi all, I´m having a strange problem with my automatic evo. Then the engine is cold I get normal the 21 psi boost. When engine gets a bit warm, like after couple of miles, the maximum boost I can get is 12 psi. When fully warm I rarely get it to 21 psi, but that is quite uncommon. Otherwise the...