Akrapovic vs AWE Exhaust for Mercedes-AMG E63 (W213)

Choosing an exhaust for the W213 Mercedes-AMG E63 comes down to two very different philosophies: Akrapovic's featherweight titanium art piece, or AWE Tuning's American-made stainless system with valves you flip from the driver's seat. Both bolt onto the same 603-horsepower monster, but they sound, weigh, and price out worlds apart. This Akrapovic vs AWE exhaust comparison for the 2018-2023 Mercedes-AMG E63 and E63 S (W213) breaks down material, sound control, power, fitment, and cost so you can pick the right cat-back the first time.

What You Are Modifying: The W213 Mercedes-AMG E63

The W213-generation Mercedes-AMG E63 (2018-2023) is powered by the hand-built M177 4.0-liter twin-turbo V8, with the two turbochargers nestled in the “hot-inside-V” between the cylinder banks. In E63 S trim it makes 603 hp and 627 lb-ft of torque; the standard E63 produces 563 hp and 553 lb-ft. Power runs through the AMG Speedshift MCT 9-speed and the 4MATIC+ all-wheel-drive system, which includes a rear-drive Drift Mode. The E63 S hits 60 mph in about 3.3 seconds and tops out at 186 mph with the AMG Driver's Package.

That performance comes in a sedan (W213) or wagon (S213) body weighing roughly 4,500 pounds. Because so much of that mass sits high and rearward, the exhaust is one of the few upgrades that both changes the car's character and shaves real weight. The factory system is heavy stainless steel with electronically valved mufflers, so any aftermarket system has to match or beat that valve functionality to feel like an upgrade rather than a compromise. That is exactly where Akrapovic and AWE take opposite roads.

Akrapovic Evolution Line (Titanium): The Halo System

The Akrapovic Evolution Line is a full titanium cat-back that replaces the factory performance exhaust and drops more than 45% of the system's weight versus stock. Titanium is roughly half the density of stainless steel (about 4.43 g/cm³ versus 8.0 g/cm³), which is why a system this large can feel this light. Akrapovic casts an active X-connection and an additional pair of exhaust valves behind the rear mufflers in its own foundry, giving the E63 precise control over sound from a whisper at idle to a full-throated V8 roar under load. It is ECE type-approved and installs plug-and-play — no ECU remap or supporting parts required.

AWE Tuning SwitchPath: Valve Control on Demand

The AWE Tuning SwitchPath takes the opposite approach: American-made stainless steel with valves you actively command. It is handcrafted from dual 3-inch, .065-inch-wall U.S.-sourced CNC mandrel-bent T304L stainless steel, with a valved H-pipe up front and valved resonators in the rear. Press the button and the car flips between a quiet Touring path and a loud SwitchPath in an instant. On the dyno, AWE measured peak gains of 23 hp and 7 lb-ft, with maximum gains of 35 hp at 6,300 rpm and 53 lb-ft at 3,000 rpm at the crank — meaningful mid-range for a 4,500-pound sedan.

AWE offers two versions. Our SKU (3025-31044) is built for DPE cars — those that left the factory with the AMG Performance Exhaust — so it integrates with the factory exhaust-mode controls. The non-DPE version ships with the SwitchPath Remote (two remotes plus a control box) and valve motors for cars without the factory valved exhaust. Either way, you get on-demand control that the Akrapovic system's factory-linked valves cannot fully replicate.

The Middle Path: Akrapovic Base Cat-Back + Build-Your-Own

Not ready to spend eleven grand but still want titanium? Akrapovic sells the Evolution Line as a base cat-back without tips for $6,196.03 (part MTP-ME/T/5H). It delivers the same titanium construction and active valve control as the complete system; you simply add the tips and, if required for your configuration, the Evolution link pipe separately. This is the smart route if you want to spread the cost or choose a specific tip finish.

Akrapovic vs AWE: Side-by-Side Comparison

Here is how the three exhaust systems you would actually cross-shop for the W213 E63 stack up. All prices and specs are current at NLP Performance.

Sound, Drone, and Daily Livability

Both systems transform the E63's voice, but they get there differently. The Akrapovic's titanium walls and cast X-connection produce a higher-pitched, more metallic, exotic tone — the closest a four-door AMG gets to a race car. Its rear valves open progressively with the drivetrain, so the loudest mode arrives with throttle rather than a manual switch. The AWE SwitchPath, by contrast, gives you a hard binary: a genuinely civil Touring mode for the highway and a dramatic full-open SwitchPath mode on command, so you decide when your neighbors hear you.

For a daily-driven E63, that button matters. Drone — the low-frequency cabin boom at cruise — is the biggest complaint with any aftermarket AMG exhaust, and being able to force the quiet path with the valves closed keeps long highway stretches comfortable. If your E63 is a weekend car and you want the lightest, sharpest-sounding system regardless of price, the Akrapovic wins. If it doubles as your commuter, the AWE's on-demand control is the more livable choice.

Installation and Fitment: What to Expect

Both systems are true bolt-on cat-backs that pick up behind the factory catalytic converters, so neither requires cutting, welding, or a tune. In our Tampa, FL shop, a W213 E63 cat-back swap is a lift-and-hardware job: drop the factory system off its rubber isolators, reuse the OEM hangers, and hang the new sections. Most installs take an experienced tech about two to three hours, plus time to align the tips evenly in the rear valance.

The Akrapovic Evolution Line reuses the factory mounting points, and its cast titanium sections are noticeably easier to handle on the lift simply because they weigh so much less. Because it is ECE type-approved and keeps the OEM-style valve wiring intact, the car's exhaust-mode logic keeps working without throwing error codes. The complete package arrives with the gloss carbon-fiber tips, so there is nothing else to source before install day.

The AWE SwitchPath is where fitment homework matters most. Order the DPE version (part 3025-31044) only if your E63 left the factory with the AMG Performance Exhaust; that variant taps into the factory controls so the OEM drive-mode button toggles the valves. If your car did not have the factory valved exhaust, you need the non-DPE version, which ships with the SwitchPath Remote and valve motors. Get this right on the order and the rest is a straightforward bolt-on. Either way, we recommend torque-checking the clamps after the first few heat cycles — a five-minute step that keeps the dual 3-inch stainless sections rattle-free.

Beyond the Exhaust: Supporting Mods for the M177

An exhaust is the headline, but a few supporting parts help the M177 4.0-liter twin-turbo breathe and stop as well as it sounds. A washable, reusable drop-in filter improves intake airflow with zero fitment fuss, braided stainless brake lines firm up the pedal on a heavy AMG, and forged pistons unlock serious headroom for boosted builds.