Bench tests for Billet wheels are good if you have major mods and big injectors and you know the drill. MK4 VW Turbo 1.8T EO5 50mm COMPRESSOR JETTA GOLF GTi KO4-001 XLC. EO5 50mm COMPRESSOR. Specifically designed for the mk4 VW Turbo 1.8T EO5 50mm COMP JETTA GOLF GTi KO4-001.