The N20's factory turbo runs out of breath at 5,000 RPM, choking your 28i just when you need power most. These high-flow turbos eliminate that restriction with billet compressor wheels and enlarged housings that maintain boost pressure through redline. Performance Gains Expect 40-60 wheel horsepower over stock with supporting modifications, transforming the N20's torque curve from front-loaded to linear. Peak torque arrives 500 RPM earlier and sustains to 6,500 RPM instead of the factory cliff at 5,200. The upgraded internals handle 22-24 PSI reliably while maintaining the factory turbo's spool characteristics. Throttle response sharpens noticeably in the 3,000-5,500 RPM range where the stock unit starts gasping. Fitment N2X (2011-2017): F22 228i, F30 320i/328i, F32 428i, F34 328i GT, F10 528i, F25 X3 28i, F26 X4 28i, E84 X1 28i, E89 Z4 20i/28i Installation & Supporting Mods Professional installation strongly recommended. N20 turbo removal requires working in cramped quarters around oil feed lines, coolant lines, and the exhaust manifold. Made to order with 4-8 weeks lead time — we machine each set specifically for your application. For PWG-equipped models, consider an upgraded wastegate to handle the increased flow. Maximum gains require supporting modifications: intercooler, intake, and tune are essential to realize full potential. Need help planning your build or stuck mid-install? Text us at 813.252.1025 — we will walk you through it. Shipping Free shipping to the lower 48 states. International shipping available — contact us for a quote.
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