The AC Schnitzer Exhaust System is a popular aftermarket upgrade for the Acura TL Type S, known for enhancing performance and sound. This system adds approximately 15 horsepower while delivering a refined, aggressive exhaust note. Below, we break down the costs, installation steps, and what makes this German-engineered exhaust a standout choice for TL Type S owners.

Understanding AC Schnitzer and Their Exhaust Systems

AC Schnitzer is a German automotive tuning company that specializes in BMW and Mini performance parts, but they also produce exhaust systems for selected Acura and Honda models. Their reputation rests on precision engineering, high-quality materials, and a focus on performance gains that do not sacrifice daily drivability. For the Acura TL Type S, the AC Schnitzer exhaust system is designed as a direct bolt-on replacement for the factory exhaust, using mandrel-bent stainless steel tubing and TIG-welded construction to ensure durability and consistent exhaust flow.

Design Philosophy

Unlike generic aftermarket exhausts, AC Schnitzer tunes each system to match the specific engine characteristics of the target vehicle. For the TL Type S’s 3.5-liter V6, the system targets the mid-range power band where the car is most often driven. The exhaust features a dual outlet design (two tips) that maintains the factory fascia look while freeing up back pressure. The muffler canister uses a combination of sound-dampening chambers and perforated tubes to produce a deep, mellow tone under light throttle that opens up into a purposeful roar under wide-open throttle.

Materials and Construction

The AC Schnitzer exhaust for the TL Type S is constructed from T-304 stainless steel, chosen for its corrosion resistance and ability to withstand high exhaust temperatures. The piping is 2.5 inches in diameter, larger than the factory 2.25-inch pipes, reducing restriction. The entire system is manufactured in Germany and comes with all necessary gaskets and clamps. The muffler is polished to a mirror finish, although it sits mostly hidden under the rear bumper. The exhaust tips (2 x 3.5 inch) are laser-cut stainless steel and include the AC Schnitzer logo.

Performance Gains: Dyno-Proven Horsepower

The most quoted gain for the AC Schnitzer exhaust on a stock TL Type S is 15 horsepower at the wheels. While this number is realistic, actual results depend on the vehicle’s condition, fuel quality, and ambient temperature. Independent dyno tests on enthusiast forums have recorded gains between 12 and 17 hp, with torque increasing by 10–12 lb-ft in the 3500–5000 rpm range. The engine’s free-breathing nature also reduces the induction noise slightly by lowering back pressure, making the intake more audible.

Why 15 HP Matters

The factory TL Type S produces around 286 horsepower at the crank. A 15-wheel horsepower gain translates to roughly 20 crank horsepower, bringing the total near 306 hp. For a modest investment in the exhaust alone (without a tune or intake), this is a solid improvement. The power gain is achieved in the 3500–6000 rpm range, which is exactly where the car performs during spirited driving. Combined with a cold-air intake and a reflash tune, some owners have reported total gains of 30–40 horsepower.

The AC Schnitzer exhaust is designed to be street legal in most regions. It retains the factory catalytic converter locations and does not trigger the check engine light. However, some aftermarket downpipes or test pipes can cause issues; the AC Schnitzer system is a cat-back (from the catalytic converters back) system, meaning it does not replace the catalytic converters. Check your local noise and emissions laws; in some states, any exhaust modification may be subject to annual inspections.

The Sound of Performance: Exhaust Note Profiles

Sound is a major reason owners choose the AC Schnitzer exhaust. The system eliminates the muffled, restrained note of the stock exhaust and replaces it with a deep, subdued tone at idle and a melodic rise through the rev range. There is minimal drone at highway speeds (around 70–80 mph), a common complaint with other aftermarket exhausts. The exhaust note is often described as “European” – refined and athletic without being boisterous or raw. The dual tips produce a symmetrical sound exit, with no uneven popping or raspiness.

Comparison to Other Exhausts

  • Stock Acura Exhaust: Quiet, but definitely weakens the driving experience. Almost no sound above 4000 rpm.
  • AC Schnitzer: Deep, refined, controlled. Minimal drone. Adds 12–17 whp.
  • Megan Racing Exhaust: Loud and aggressive, but known for drone and cheap construction. Lower cost.
  • A-Spec Exhaust: Acura’s factory performance exhaust. Similar price, but only adds 5–8 hp.
  • Magnaflow Exhaust: Mellow sound, good build quality, but power gains are moderate.

Choose AC Schnitzer if you want the best balance of sound, quality, and actual horsepower gains. It is not the loudest or the cheapest, but it is widely regarded as the best all-around upgrade for the TL Type S.

Cost Breakdown: System, Installation, and Hidden Costs

The price of the AC Schnitzer exhaust system for the Acura TL Type S ranges from $1,200 to $1,800, depending on the supplier. Some retailers offer free shipping, while others charge extra. Installation typically costs $100 to $300 at a reputable muffler shop. Doing it yourself saves money, but you must have proper tools and lift access. Here is a detailed cost table:

Item Estimated Cost
AC Schnitzer Cat-Back Exhaust (Parts) $1,200 – $1,800
Professional Installation $100 – $300
Replacement Gaskets & Clamps $20 – $50
Torque Wrench Rental (if DIY) $15 – $30
Possible Re-Tune (ECU Flash) $300 – $600

Note: The ECU re-tune is optional but recommended if you also install an intake or headers. The exhaust alone will not require a tune to run safely, but a tune can maximize the gains.

Where to Buy

  • Official AC Schnitzer Distributors: Highly recommended for warranty and authenticity.
  • Heeltoe Auto – long-time Acura performance specialist. (HeeltoeAuto.com)
  • ULM (Underline Motorsports) – carries many TL Type S parts.
  • Acurazine Forums Classifieds – sometimes used units sell for ~$800.

Check that the exhaust is specifically for the 2007–2008 TL Type S (3rd generation). The 2004–2006 TL base model may require modifications to fit. The AC Schnitzer part number is 911 49 02 for the sedan.

Installation Guide: DIY or Professional?

Installing a cat-back exhaust is a moderate difficulty job. If you are comfortable under a car and have basic hand tools, you can do it yourself in about 2–3 hours. Professional installation is faster and guarantees no leaks.

Tools Needed

  • Jack, jack stands (or a lift)
  • 14mm and 10mm sockets, wrenches
  • Torque wrench (for final tightening)
  • Penetrating oil (e.g., PB Blaster) for rusted bolts
  • Exhaust sealant (optional, but good for slip joints)
  • Safety glasses and gloves

Step-by-Step DIY Process

  1. Lift the vehicle: Jack up the rear and securely place on stands. Ensure the car is level.
  2. Remove the old exhaust: Unbolt the factory cat-back at the mid-pipe flange (two bolts). Support the muffler section and remove hangers from rubber isolators. You may need a pry bar for stubborn hangers.
  3. Install new exhaust: Hang the AC Schnitzer muffler section into the factory hangers. Attach the mid-pipe to the muffler using the supplied clamp. Do not tighten fully until everything is aligned.
  4. Connect to catalytic converter: Bolt the mid-pipe to the stock catalytic converter flange using new gaskets. Torque to 30–35 lb-ft.
  5. Align tips: Adjust the muffler so the tips sit evenly in the bumper cutouts. Tighten all clamps.
  6. Check for leaks: Start the engine and listen for any hissing at the joints. If leaking, retighten clamps and recheck.

Professional vs. DIY Decision

If you live in a rust-prone area, factory exhaust bolts may be seized. A shop has torches and impact tools to remove stubborn fasteners, preventing damage. The cost of a professional installation is often worth it to avoid stripped bolts or broken studs. If your car is low-mileage and in a southern state, DIY is straightforward.

Aftermarket Exhaust Alternatives for the TL Type S

While the AC Schnitzer is a top-tier choice, other options exist. Below is a brief comparison of popular cat-back exhausts for the TL Type S.

Brand Price Range Horsepower Gain Sound Profile
AC Schnitzer $1,200 – $1,800 12–17 whp Deep, Euro-refined, minimal drone
Magnaflow (Street) $600 – $900 5–10 whp Mellow, some drone
Megan Racing $400 – $600 6–8 whp Loud, aggressive, high drone
Borla $900 – $1,200 8–12 whp Sporty, slight drone
A-Spec (Acura OEM) $1,000 – $1,500 5–8 whp Firm but quiet

For TL Type S owners who prioritize power and sound quality, the AC Schnitzer stands out. The higher cost is reflected in the materials, engineering, and warranty. Lower-priced alternatives may satisfy budget-minded buyers but often sacrifice fitment, durability, or sound refinement.

Long-Term Maintenance and Tips

Stainless steel exhausts require minimal maintenance. The AC Schnitzer system is designed to outlast the car. However, a few practices will keep it looking and sounding its best.

  • Clean exhaust tips: Use a non-abrasive metal polish (e.g., Simichrome) every few months to remove carbon buildup.
  • Check hangers: Rubber isolators can dry out after 5–7 years. Replace if the exhaust begins to sag or rattle.
  • Listen for leaks: Over time, the flange gasket may compress. Retighten bolts if you hear a hiss at idle.
  • Winter caution: In areas with road salt, the exposed stainless steel still resists corrosion, but the fasteners (steel) may rust. Apply anti-seize to the bolts during installation.
  • Warranty: AC Schnitzer offers a limited lifetime warranty on their exhaust systems against manufacturing defects. Retain the receipt and registration.

Frequently Asked Questions

Will this exhaust void my Acura warranty?

If your car is still under factory warranty, a cat-back exhaust typically does not void the warranty unless it is the direct cause of a failure (e.g., a poorly installed exhaust damaging an oxygen sensor). AC Schnitzer is a quality product and unlikely to cause issues. However, AC Schnitzer’s own warranty is provided separately.

Do I need a tune after installing the AC Schnitzer exhaust?

No. The engine management system can adapt to the improved flow within normal limits. However, a tune can optimize the air-fuel ratio and unlock additional power. Many owners report solid gains from the exhaust alone.

Can I use the AC Schnitzer system with a supercharger?

Yes, but a larger diameter exhaust (such as 3 inches) is often recommended for forced induction. The 2.5-inch AC Schnitzer system may be satisfactory for low-boost applications, but for higher boost levels, consider a custom exhaust.

How loud is the AC Schnitzer exhaust compared to stock?

At idle, it is approximately 2–3 dB louder. Under hard acceleration, it is 5–8 dB louder, which is noticeable but not overwhelming. The tone is deeper, not peaky. It is easily tolerable for daily driving.

Conclusion

Upgrading to the AC Schnitzer Exhaust System can significantly enhance the performance of your Acura TL Type S, adding both horsepower and an improved sound. While the costs can vary, the investment is often worth it for enthusiasts looking to elevate their driving experience. With careful installation and proper maintenance, this exhaust system can provide long-lasting benefits. For further reading, visit AC Schnitzer Official Site and the Acurazine Performance Forum for owner reviews and dyno sheets.