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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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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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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At Active Autowerke, performance is about more than peak numbers. It’s about delivering a driving experience that feels sharper, sounds better, and maintains the refinement expected from a modern BMW. With over four decades of BMW performance development behind it, the F97/F98 X3M/X4M rear exhaust was engineered to give the S58-powered platform the deeper, more assertive tone many owners feel the factory system lacks. This axle-back system increases exhaust presence while preserving proper flow and daily drivability. By retaining the factory valve actuators, the system maintains full OEM functionality — delivering an aggressive note with the valves open and a controlled, composed tone when closed. On its own, the rear section provides a noticeable but refined sound improvement. For owners looking to maximize both sound and performance, the system pairs effectively with Active Autowerke mid-pipes and catted downpipes. Construction focuses on durability and consistent fit. The exhaust is manufactured from high-quality 304 stainless steel and each unit is test-fit on Active Autowerke’s dedicated F97/F98 fixture to ensure proper alignment and installation. Important Fitment Information A version is available for vehicles retaining the factory mid-pipes. If you later upgrade to an Active Autowerke or other aftermarket mid-pipe, different connecting pipes may be required. Sound Note: The rear section alone offers a refined increase in volume. The most significant sound change occurs when paired with an upgraded mid-pipe. Product Highlights Designed and manufactured in the USA Constructed from durable 304 stainless steel Deeper, more aggressive tone while retaining factory valve control Reuses OEM BMW exhaust valve actuators Each system test-fit on F97/F98 exhaust fixture Guaranteed fitment for F97/F98 BMW X3M and X4M Includes all necessary installation hardware
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At Active Autowerke, performance is about more than peak numbers. It’s about delivering a driving experience that feels sharper, sounds better, and maintains the refinement expected from a modern BMW. With over four decades of BMW performance development behind it, the F97/F98 X3M/X4M rear exhaust was engineered to give the S58-powered platform the deeper, more assertive tone many owners feel the factory system lacks. This axle-back system increases exhaust presence while preserving proper flow and daily drivability. By retaining the factory valve actuators, the system maintains full OEM functionality — delivering an aggressive note with the valves open and a controlled, composed tone when closed. On its own, the rear section provides a noticeable but refined sound improvement. For owners looking to maximize both sound and performance, the system pairs effectively with Active Autowerke mid-pipes and catted downpipes. Construction focuses on durability and consistent fit. The exhaust is manufactured from high-quality 304 stainless steel and each unit is test-fit on Active Autowerke’s dedicated F97/F98 fixture to ensure proper alignment and installation. Important Fitment Information A version is available for vehicles retaining the factory mid-pipes. If you later upgrade to an Active Autowerke or other aftermarket mid-pipe, different connecting pipes may be required. Sound Note: The rear section alone offers a refined increase in volume. The most significant sound change occurs when paired with an upgraded mid-pipe. Product Highlights Designed and manufactured in the USA Constructed from durable 304 stainless steel Deeper, more aggressive tone while retaining factory valve control Reuses OEM BMW exhaust valve actuators Each system test-fit on F97/F98 exhaust fixture Guaranteed fitment for F97/F98 BMW X3M and X4M Includes all necessary installation hardware
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