Understanding the AWE Tuning Exhaust Upgrade for Your Porsche Cayman

Installing an AWE Tuning exhaust system on your Porsche Cayman transforms both the auditory experience and performance characteristics of your mid-engine sports car. AWE Tuning has established itself as a premier manufacturer of aftermarket exhaust systems, particularly for German automobiles, by combining precision engineering with distinctive sound profiles. The company offers several configurations for the Cayman, including the Track Edition and the SwitchPath™ system, which provides valved control over exhaust flow. This upgrade not only reduces backpressure for potential horsepower gains but also sheds significant weight compared to the factory system. For Cayman owners seeking to personalize their driving experience, understanding the full scope of installation, benefits, and post-installation considerations is essential.

Tools and Materials Required

Before beginning the installation, assemble all necessary tools and components. Having everything on hand prevents interruptions and ensures a smooth workflow.

Essential Tools

  • Socket set with extensions – Metric sizes ranging from 8mm to 18mm are typically required for exhaust hardware.
  • Torque wrench – A 3/8-inch drive torque wrench capable of 15–50 ft-lb range for precise tightening of clamps and hangers.
  • Floor jack and jack stands – A low-profile jack works best for the Cayman’s ground clearance; use four jack stands for maximum stability.
  • Safety goggles and mechanic’s gloves – Protect eyes and hands from debris and sharp edges.
  • Penetrating oil – Products like WD-40 or PB Blaster help loosen rusted bolts and exhaust hangers.
  • Flathead screwdriver or pry bar – Useful for removing rubber exhaust hangers.
  • Exhaust hanger removal tool – Optional but helpful for stubborn hangers.
  • Shop rags or paper towels – For cleaning components and wiping spills.

Components Included with the AWE Tuning Exhaust System

  • Full exhaust assembly – Includes muffler section, piping, and tips (depending on configuration).
  • Hardware kit – Clamps, bolts, washers, and sometimes hanger bushings.
  • Installation manual – Specific to your Cayman model year and exhaust variant.
  • Drone reduction chamber – Included with certain AWE models to minimize cabin resonance.

If you are installing a valved system like the SwitchPath™, also confirm that the vacuum line kit and controller module are present. Visit the AWE Tuning website to verify which system fits your specific Cayman generation (981, 982, or 987).

Preparation and Safety

Proper preparation reduces risk and ensures a clean, damage-free installation. Begin by parking your Cayman on a level, hard surface. Engage the parking brake and chock the front wheels to prevent any movement.

Battery Disconnection

Disconnect the negative terminal of the battery using a 10mm socket. This step is critical for vehicles with electronic exhaust valves or adaptive exhaust systems, as accidentally shorting wires during installation can cause electrical faults. Wrap the disconnected cable terminal with a shop rag or electrical tape to prevent accidental contact.

Vehicle Lifting

Using a floor jack, lift the rear of the vehicle at the designated jack point located behind the rear axle. Place jack stands under the reinforced pinch weld pads on both sides. Never rely solely on a hydraulic jack. Lower the vehicle gently onto the stands and verify stability before crawling underneath. The Cayman’s exhaust system is accessible from underneath, but you may also need to remove the rear underbody panel (held by plastic clips and torx screws) for better access to hangers and clamps.

Removing the Stock Exhaust System

The factory exhaust on a Porsche Cayman is generally straightforward to remove, but components may be tight due to thermal expansion and corrosion. Work methodically to avoid damaging adjacent parts.

Step 1: Spray Penetrating Oil

Apply penetrating oil to all exhaust clamp bolts, hanger bolts, and the connection points at the catalytic converter flanges. Allow the oil to soak for at least five minutes while you prepare tools.

Step 2: Remove Exhaust Hangers

Locate the rubber exhaust hangers that support the muffler and mid-pipe sections. Typically there are four to six hangers. Using a flathead screwdriver or a dedicated hanger pulling tool, carefully work the rubber mounts off the metal chassis hooks. Lubricating the hangers with soapy water or silicone spray eases removal. Do not cut the rubber; spare hangers are available, but AWE includes new ones in some kits.

Step 3: Loosen and Remove Clamps

Using a socket set, loosen the bolts on the exhaust clamps connecting the muffler section to the intermediate pipe, and those joining the intermediate pipe to the catalytic converters. On later Cayman models, there may also a clamp near the rear differential. If bolts are severely rusted, apply more penetrating oil and wait before attempting to unscrew.

Step 4: Fully Detach the System

With all hangers and clamps free, support the exhaust system from underneath. Ask a helper to steady it while you slide the sections apart from the catalytic converter flanges. Lower the stock exhaust carefully; it is heavy and may have sharp edges. Remove the muffler section first, then the intermediate pipe. Note the orientation of any gaskets or donut rings for reinstallation.

Step 5: Inspect Remaining Components

While the exhaust is out, inspect the catalytic converter flanges for damage or excessive corrosion. Check the O2 sensor wiring to ensure it is not pinched or melted. If you notice any exhaust leaks upstream, address them now to avoid future issues.

Installing the AWE Tuning Exhaust System

Now you are ready to install the AWE exhaust. Lay out the new components and verify that all pieces match the intended routing under the car.

Step 1: Prepare the New Hardware

Unpack the AWE exhaust and inspect each component. Apply a thin layer of anti-seize compound to all threaded bolts and clamp threads to prevent galling, especially if you live in a region with road salt.

Step 2: Install the Mid-Pipe Section

Starting from the front of the exhaust tunnel, position the AWE intermediate pipe against the catalytic converter flanges. If your kit includes replacement gaskets, place them between the flanges. Hand-tighten the provided bolts and nuts to hold the pipe in place. Do not fully tighten yet; final alignment is easier with some play.

Step 3: Attach the Muffler Section

Slide the AWE muffler section into position, aligning the inlet pipe with the mid-pipe outlet. Use the provided clamp to join the two sections. Again, tighten only enough to prevent slippage.

Step 4: Reattach Exhaust Hangers

Fit the rubber hangers over the chassis hooks, then stretch them over the hanger pins on the AWE muffler and mid-pipe. Most AWE systems use the factory hanger locations, so this step is straightforward. If the hangers feel overly tight, use a small amount of silicone spray to assist.

Step 5: Connect the SwitchPath™ System (If Applicable)

For vehicles equipped with the AWE SwitchPath™ valved exhaust, follow these additional steps:

  • Route the vacuum line from the exhaust valve actuator to the vacuum source (typically a dedicated vacuum tap or solenoid).
  • Secure the controller module under the vehicle or in the rear trunk area, ensuring it is protected from water and heat.
  • Connect the wiring harness to the power source and remote control receiver.
  • Test valve movement manually before finalizing all connections.

Step 6: Align and Tighten Everything

Before tightening all hardware, check the exhaust tip alignment relative to the rear bumper cutouts. Adjust the muffler position by loosening the clamps and hangers until the tips are centered and sit evenly left-to-right. Once satisfied, use a torque wrench to tighten all bolts to the specifications provided in the AWE manual (typically 30–40 ft-lb for clamps). Recheck after the first heat cycle.

Step 7: Reinstall Underbody Panels

If you removed any plastic underbody covers, reattach them using the original hardware. Ensure the exhaust does not contact the covers; you may need to trim a small portion of plastic for clearance on certain Cayman models.

Finalizing the Installation

With the physical installation complete, perform final checks and reconnect the battery.

Battery Reconnection and System Reset

Reconnect the negative battery terminal. On later Cayman models with adaptive exhaust systems, start the engine and allow it to idle for a few minutes. This reinitializes the exhaust valve controller (if equipped) and the engine control unit. Drive the vehicle gently for the first ten miles to let the system adapt to the new airflow characteristics.

Leak Inspection

With the engine running, use a shop rag or a glove to loosely cover each exhaust tip. You should feel steady pressure; any hissing or fluctuation indicates a leak. Apply soapy water to all joints and clamps while the system is cold, then start the engine. If you see bubbles, retighten the clamp or replace a gasket.

Heat Cycle and Retorque

After a short drive (approx. 10–15 minutes of mixed driving), allow the exhaust to cool. Then crawl underneath and retorque all clamps and bolts. The initial heat cycle can cause fasteners to loosen slightly; a final 360-degree check prevents future rattles and leaks.

Testing and Fine-Tuning Your New Exhaust

Your AWE Tuning exhaust is installed, but the experience doesn’t end there. Proper testing ensures you get the most out of the upgrade.

Sound Evaluation

Take your Cayman on a varied route that includes highways, winding roads, and stop-and-go traffic. Listen for:

  • Cold start tone – AWE systems are known for a deep, aggressive growl on startup that mellows as the engine warms.
  • Drone at cruising speeds – The Track Edition may have more drone around 2,000–2,500 RPM; the SwitchPath™ system allows you to close valves to reduce drone. If drone is excessive, consider pairing the exhaust with AWE’s drone reduction chamber or a resonator.
  • Wide-open-throttle roar – The full potential of the system is heard above 4,000 RPM. Expect a sharper, more exotic note compared to stock.

Performance Verification

While the butt-dyno is subjective, you can also log performance data using a OBD-II scanner to check for improvements in throttle response and minor horsepower gains. Many Cayman owners report smoother power delivery and quicker spool-up due to reduced backpressure. For a more precise assessment, consider a professional dyno session before and after installation. Refer to Porsche Club of America forums for community dyno results with AWE systems.

Long-Term Checks

After 100 miles, inspect all clamps and hangers again. Check for soot around joints, which indicates a leak. Periodically clean the exhaust tips with a non-abrasive metal polish to maintain appearance.

Potential Challenges and Solutions

Even with a quality product like AWE Tuning, installation may present obstacles. Here are common issues and how to address them.

Stuck or Rusted Bolts

If bolts on the catalytic converter flange are seized, apply heat using a propane torch (carefully, away from fuel lines) to expand the metal. Alternatively, use a nut splitter as a last resort. Always have replacement hardware on hand.

Hanger Difficulty

Factory rubber hangers can be extremely tight. Use a silicone-based lubricant and a hanger removal tool. If the rubber tears, replace them with new ones from AWE or your Porsche dealer.

Check Engine Light

After installation, some Caymans (particularly 987.2 and 981 models) may trigger a check engine light due to slight changes in exhaust backpressure affecting O2 sensor readings. This is rare with cat-back systems, but if it occurs, confirm all connections are sealed and no exhaust leaks exist. If the light persists, a reset using a diagnostic tool or driving several cycles usually clears it. For peace of mind, consult Rennlist forums for model-specific advice.

Conclusion

Installing an AWE Tuning exhaust on your Porsche Cayman is a rewarding project that elevates the car’s character without compromising reliability. By following this detailed step-by-step guide, you ensure a clean, leak-free installation that maximizes the performance and acoustic benefits. Take your time with alignment and torque specifications, and don’t hesitate to reach out to AWE Tuning customer support or the Porsche community if questions arise. The result is a Cayman that sounds as exhilarating as it drives, whether you’re carving canyon roads or cruising to a cars and coffee event.

For further reading on AWE Tuning products and experience reports, visit the official AWE Tuning Cayman exhaust page and the Planet-9 Porsche forum.