B58 DAW UltraFlow Turbocharger - Stage 2 Fast Road & Track Day, Part No. UF-B58

The DAW UltraFlow UF-B58 turbo isn’t a hybrid Frankenstein or a laggy big turbo - it’s a precision-calibrated, fast-spooling unit built for B58 engines that need more boost, better response and real-world usability.

• Designed for: B58-powered cars - E9X (M140i, M240i), F3X (M340i, 340i), G2X (Z4 M40i), A90 Supra, G29 Z4 - all B58 variants including N55-based swaps where flange and compressor match
• Fits: Stock B58 manifolds and downpipes - no machining, no custom fabrication, no inlet mods required
• Stage 2 intent: Works cleanly with supporting mods - decat downpipe, high-flow intake, stage 2 map - delivers strong midrange torque and clean top-end to ~700 hp on pump fuel, higher on E85
• Not for: Daily driver-only builds wanting OEM-plus refinement, or show car owners who’ll never crack 4,000 rpm
• Search terms covered: B58 turbo upgrade, B58 stage 2 turbo, B58 fast road turbo, B58 track day turbo, B58 decat turbo, B58 UF-B58, Supra A90 turbo, Z4 M40i turbo, M340i turbo, M240i turbo, B58 650hp turbo