🔥 CTS Turbo High-Flow Catted Downpipe – BMW N55 (Pneumatic Wastegate)

Unleash the full potential of your N55-powered BMW with the CTS Turbo High-Flow Catted Downpipe, specifically designed for vehicles with the pneumatic wastegate turbocharger (early N55 models). Engineered to maximize exhaust flow, this downpipe delivers improved throttle response, faster turbo spool, and enhanced power and sound — all while retaining daily drivability.

⚙️ Key Features:

• ✅ Direct-fit design for BMWs with pneumatic wastegate turbos (production up to 07/2013)

• 🏁 Significant horsepower and torque gains when paired with Stage 2 tuning

• 💨 200-cell high-flow catalytic converter for reduced backpressure and improved exhaust flow

• 🛠️ Constructed from T304 stainless steel – corrosion-resistant and built to last

• 🔧 Hand TIG-welded and back-purged for superior strength and flow

• 🔊 Deep, sporty tone under load with no drone when cruising

• 📐 CAD-engineered and tested on real vehicles to ensure perfect fit and finish

• ⚠️ Check engine light (CEL) may occur without proper tuning – Bootmod3 Stage 2 strongly recommended

• 🏁 For off-road use only

⚠️ Catalytic converters damaged by crackle or burble tunes are not covered under warranty.

📦 Fitment Guide:

• F30 BMW 335i & 335xi – Build dates from 2012 through 07/2013

• F20/F21 BMW M135i & M135xi – Build dates from 2012 through 07/2013

❗ BMW models produced after 07/2013 will require the CTS 4" downpipe for N55 electronic wastegate models.

🔧 Why Upgrade?

The factory N55 downpipe is restrictive and limits performance. The CTS Turbo high-flow catted downpipe reduces backpressure while keeping emissions in check, delivering up to 30HP gains with supporting mods and tuning. It's the perfect balance of power, sound, and emissions-conscious design for the performance enthusiast.

Give your N55 the breathing room it deserves—upgrade to the CTS Turbo High-Flow Catted Downpipe and transform your BMW’s driving experience.