Take your B58 or S58 build further with the JB4PRO Flex Fuel Add-On Harness—a simple, plug-and-play way to add an ethanol sensor and optional fuel pressure sensor to your JB4PRO setup. Keep your install clean, your wiring organized, and your tune dialed to match every fuel blend in the tank. Why it matters: Plug & Play: Connects directly to your JB4PRO—no cutting or splicing required. Sensor Ready: Supports ethanol and fuel pressure sensors for precise, real-time fueling adjustments. Clean, Safe Installation: Includes a 12 V adapter and inline fuse for hassle-free integration. How it works: This harness links your JB4PRO tuner to your flex fuel hardware. It’s not a complete flex fuel kit—you still need a compatible ethanol sensor—but it gives your JB4PRO the accurate readings it needs to adjust timing, boost, and fueling for E30, E50, or E85 blends.
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Compatible with BMW B58 and S58 engines Accurate, reliable, and plug-and-play — the B58/S58 5-Bar TMAP Sensor ensures your engine sees the full boost picture, giving your tune the confidence it needs to perform safely and consistently.
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Lifting your BMW, MINI, or GR Supra should never involve crossing your fingers and hoping you don't crush a rocker panel. Plastic factory jack points are notorious for cracking under the flat, unforgiving surface of a standard floor jack. Stop damaging your car's undercarriage and lift like a pro with this Billet Jack Pad Adapter from Burger Motorsports.
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Lifting your BMW, MINI, or GR Supra should never involve crossing your fingers and hoping you don't crush a rocker panel. Plastic factory jack points are notorious for cracking under the flat, unforgiving surface of a standard floor jack. Stop damaging your car's undercarriage and lift like a pro with this Billet Jack Pad Adapter from Burger Motorsports.
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For the owner of a late-model BMW who demands a balance of high-end performance and sophisticated daily drivability, Active Autowerke offers the B58N Gen-3 GESI Catted Downpipe. Built with a focus on long-term reliability and environmental standard compliance, this downpipe features an EPA-registered GESI G-Sport catalytic converter. These 400-cell metallic substrates are furnace-braised to the mantle, offering outstanding resistance to thermal shock and vibration. The industrial-grade 304 stainless steel construction ensures the downpipe will withstand years of heat cycles without degrading. This system is a true "plug-and-play" solution that enhances the B58's deep, throaty exhaust note while keeping emissions levels in check and the dashboard clear of errors. Key Features: 49-State Legal: Features an EPA-registered catalyst that is fully OBD2 compliant (excludes vehicles registered in CA). Superior Durability: Constructed entirely from heavy-duty 304 stainless steel with a brushed finish. Proprietary Catalyst Loading: Precious metal technology ensures the reduction of harmful emissions and eliminates raw fuel odors. OEM+ Fitment: Meticulously test-fitted on a dedicated fixture to guarantee a perfect seal with factory turbo and exhaust connections. Comprehensive Kit: Available with an optional turbo flange gasket to ensure a fresh, leak-free installation. Specifications: Type: Signature Series Valved GESI Catted Downpipe. SKU: 11-062N. Catalyst Rating: Rated for high-output applications while maintaining operational efficiency. Hardware: Includes lower mounting brackets and necessary flex section. Vehicle Fitment (US Models Only): * 2025+ BMW X3 40i / X3-M50i (G45) 2025+ BMW X5 40i (G05 LCI) / X7 40i (G07 LCI) 2025+ BMW 540i (G60) / 740i (G70)
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Active Autowerke brings motorsport technology to street-legal applications with the B58N Aflow Catted Downpipe. This system features a high-efficiency 400 Cell Per Square Inch (CPSI) Active Aflow catalytic converter that is EPA registered and 49-state legal. By utilizing proprietary precious metal loading, this catalyst reaches operational efficiency within just 9 seconds of startup, ensuring the vehicle remains fully OBD2 compliant. The furnace-brazed stainless steel substrate ensures extreme durability under high-boost conditions. This downpipe provides the flow characteristics of a race pipe while effectively neutralizing harmful emissions and odors, protecting both the environment and the vehicle's passengers. Key Features Active AFlow High-Flow Catalyst: 400 CPSI substrate designed to provide maximum flow while maintaining EPA compliance. Rapid Light-Off Time: Reaches operational efficiency within 9 seconds, ensuring OBD2 readiness monitors remain active. Forced Induction Optimized: Specifically engineered for high-boost applications with zero loss in horsepower. Extreme Heat Resistance: Built to withstand internal exhaust gas temperatures (EGTs) up to 1500°F. Durable Construction: Substrate is furnace-brazed to the mantle, preventing the internal core from shifting or breaking under heavy vibration. Specifications Vehicle Fitment: 2025+ BMW B58N Models (X3-40i, X3-M50i, X5-40i, X7-40i, 540i, 640i, 740i). Cell Density: 400 Cells Per Square Inch (CPSI). Catalyst Material: 304 Stainless Steel Substrate. Compliance: EPA Registered / 49-State Legal (Not CARB registered for California). Warranty: 5-Year/50,000-Mile on shell/ends; 2-Year/25,000-Mile on the catalytic core (Warranty void with "burble" tunes).
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