Active Autowerke F8X Single 3.5in Mid Pipe for BMW F80 M3 & F82 M4 (S55) - Exhaust Upgrade, Deeper Tone, Rasp Fix, +18whp/+30lb-ft

F8X BMW M3 M4 Centre Pipe Upgrade by Active Autowerke

Transform the soundtrack and response of your S55-powered BMW with this high-flow centre section from Active Autowerke. By replacing the restrictive factory midsection, this single 3.5 inch link pipe delivers real-world gains and a richer, deeper exhaust note that gets rid of the harsh buzz that many F8X owners want to eliminate. If you are searching for a BMW M3 F80 centre exhaust, BMW M4 F82 centre pipe, S55 centre section, M3 M4 rasp solution or UK performance exhaust upgrade, this is the proven choice.

What you will feel

• +18 whp increase over stock, verified on the dyno
• +30 lb-ft uplift for stronger mid-range pull
• Smoother flow for quicker turbo response and sharper throttle feel
• Fuller, bass-rich tone that removes the cheap weed-eater style rasp
• Lighter than the OE centre section to trim unnecessary weight
• Single-tube layout optimised for the twin turbo S55

Engineered for the S55

The stock F8X centre section can create uneven pulses that lead to a buzzy, tinny character. Active Autowerke’s solution is a single 3.5 inch midsection that harmonises exhaust flow from both turbochargers, improving drivability and clearing back pressure for a more linear surge. An ovalised 3.5 inch section is used where required to keep ground clearance while preserving cross-sectional area for maximum throughput.

Proven by us and our customers

We have installed and run this centre pipe on multiple F80 and F82 builds. Feedback is consistently excellent: quicker spool, meatier mid-range and a mature, premium tone without intrusive rasp. It is one of the most effective sound and performance mods you can do on an F8X without complicating the rest of the exhaust.

Compatibility

Designed for the BMW F8X platform with the S55 engine: F80 M3 and F82 M4.

Fitting and support

Professional installation recommended. For fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Why buy this centre section

• Dyno-proven horsepower and torque gains you can feel on the road
• Refined exhaust character with a deeper, more grown-up tone
• Optimised flow path that helps the S55 breathe and respond
• Quality engineering from a BMW performance specialist

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