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Installation video and detailed instructions included
Combined with a tune
Your F15's N55 single-turbo is starved by restrictive factory intake plumbing that chokes airflow right when boost pressure peaks
Your inputs become more precise
N55 Stage 2 Turbo WasteGate:PWG Installation video and detailed instructionsThe N55's factory twin scroll turbo prioritizes efficiency over powerour Stage 2 hybrid tears down that wall with a larger compressor wheel and reinforced internals that push your single turbo straight six into serious power territory. This is the upgrade that makes N55 owners stop envying N54 twins. Performance Gains Expect 500 550 wheel horsepower with supporting modifications, compared to the N55's stock 300 wheel horsepower ceiling. The larger