Introduction: Upgrading Your Integra Type R Exhaust

The Acura Integra Type R (ITR) is already a legendary front-wheel-drive performance car, but even Honda’s factory engineering leaves room for improvement when it comes to exhaust flow. Installing a DC Sports exhaust system on your ITR is one of the most popular and effective first modifications. This guide provides a detailed, step-by-step look at the cost, installation process, and real-world performance gains of a DC Sports cat-back or header-back system. Whether you’re a weekend warrior or a track-day regular, understanding exactly what you’re getting into will help you decide if this upgrade fits your build.

What Makes the DC Sports Exhaust Stand Out?

DC Sports has been a staple in the Honda performance community for decades. Their exhaust systems for the Integra Type R are engineered with specific goals: reduce back pressure, save weight, and deliver a distinctive, aggressive tone without excessive drone. Key features include:

  • Mandrel-bent 304 stainless steel tubing – ensures smooth, uninterrupted exhaust flow, maximizing horsepower gains.
  • High-flow straight-through muffler and resonator – reduces restriction while controlling sound levels.
  • CNC-machined flanges and TIG-welded joints – precision fitment that seals tightly and resists leaks over time.
  • Cat-back or header-back options – choose between a simpler cat-back system or a full header-back setup for maximum scavenging effect.
  • Weight savings – DC Sports systems typically shed 10–15 lbs compared to the stock exhaust, improving power-to-weight ratio and handling response.

The sound profile is often described as a deep, refined growl at idle that builds to a screaming Wail above 6,000 RPM – exactly what a B18C5 engine deserves. For those seeking a more track-oriented noise, DC Sports also offers a race version with reduced sound deadening.

Cost Breakdown and Value Analysis

The total investment for a DC Sports exhaust on your ITR depends on which components you buy and whether you install it yourself. Here’s a realistic breakdown based on current market pricing (2025):

Component Costs

  • DC Sports Cat-Back Exhaust: $550 – $750
  • DC Sports Header (if adding a header-back system): $300 – $500
  • High-flow catalytic converter (optional, if replacing stock cat): $150 – $300
  • Gaskets and hardware kit: $30 – $60

Installation Costs

  • DIY (no lift, basic hand tools): $0 – $50 for penetrating oil and replacement bolts if rusted.
  • Professional installation (independent shop): $100 – $200 for cat-back; $200 – $350 for header-back.
  • Dealership/performance specialist: $250 – $500, often includes a warranty on labor.

Compared to other premium brands like Spoon Sports or Mugen, DC Sports offers an excellent price-to-performance ratio. You can install a complete cat-back for under $1,000 total if you DIY, while achieving 90% of the gains of setups costing twice as much.

Installation Process – Step by Step

Installing a DC Sports exhaust on an Acura Integra Type R is a manageable weekend job for someone with basic mechanical skills. Allow 3–6 hours for a cat-back, or 5–8 hours for a header-back. Follow these expanded steps for a smooth experience:

Step 1: Prepare the Vehicle and Tools

Park on a level surface and let the exhaust cool completely. You’ll need:

  • Jack and jack stands (preferably a low-profile floor jack)
  • Metric socket set (10mm, 12mm, 14mm, 17mm)
  • Combination wrenches and a ratchet with extensions
  • Penetrating oil (like PB Blaster) – spray on all nuts and bolts 30 minutes before starting
  • Breaker bar for stubborn bolts
  • Exhaust hanger removal tool or flathead screwdrivers
  • Safety glasses and gloves

Pro tip: Replace all exhaust gaskets and hardware that come with the DC Sports kit. If your ITR is older than 10 years, buy new OEM Honda donut gaskets for the header-to-cat connection.

Step 2: Safely Lift the Vehicle

Chock the rear wheels, then use the jack to lift the front or rear of the car (depending on where you start). Place jack stands under the factory reinforced lifting points – never under the exhaust or suspension arms. Ensure the vehicle is stable before crawling underneath.

Step 3: Remove the Stock Exhaust

Starting at the rear, unbolt the muffler hangers from the rubber isolators. Use the hanger tool or a screwdriver to pry the rubber mounts free. Then unbolt the mid-pipe from the catalytic converter (or header) using a 14mm socket. If bolts are seized, apply heat with a torch carefully, or use a nut splitter as a last resort. Lower the stock exhaust – it’s heavy and awkward, so have a helper or a jack support it.

Note: For header-back installations, you’ll also remove the exhaust manifold from the cylinder head. The header bolts are notoriously tight; use a 6-point socket and a breaker bar. Replace the header gasket with a new OEM or high-quality aftermarket unit.

Step 4: Install the DC Sports System

Assemble the DC Sports exhaust loosely before tightening anything. This allows you to align the pipes and hangers perfectly. Starting from the front (header-back) or the rear (cat-back), attach each section using the included hardware. Apply a thin layer of anti-seize compound on the studs and nuts to prevent future corrosion. For the hangers, lubricate the rubber isolators with dish soap to slide the metal rods in easily.

Step 5: Tighten to Spec and Check Clearance

Tighten all bolts in stages, following the torque values in the DC Sports instructions (typically 25–35 ft-lbs for flange bolts). Spin each clamp evenly. Ensure the exhaust doesn’t contact the chassis, heat shields, or suspension components. If you hear rattling at idle, use a pry bar to gently adjust hanger positions. Many ITR owners add a flexible exhaust hanger or a second isolator to fine-tune fitment.

Step 6: Test for Leaks

Lower the car, start the engine, and let it idle. Block the tailpipe with a rag – if you hear hissing under the car, you have a leak. Tighten suspect connections immediately. A leak can cause a drop in performance and a ticking sound that’s annoying.

Performance Gains – Real-World Results

The Acura Integra Type R’s B18C5 engine benefits greatly from reduced exhaust restriction. On a stock ITR, a DC Sports cat-back system typically yields:

  • 10–14 horsepower at the wheels (dyno-proven by multiple owners)
  • 8–10 lb-ft of torque increase, especially in the 4,500–6,500 RPM range
  • Weight reduction of 10–12 lbs, almost all from the muffler
  • Throttle response improvement – the engine revs quicker due to less backpressure

Adding a DC Sports header to the cat-back (full header-back) brings 15–22 whp and 12–16 lb-ft peak gains. The mid-range torque bump makes daily driving more fun, and the top-end pull extends the powerband to redline. On the track, these gains translate to faster lap times, especially on circuits where acceleration out of corners is critical.

For comparison, Skunk2 Racing cat-backs offer similar peak gains but with a louder, more aggressive tone. DC Sports is often chosen for its “OEM+” character – civilized when you need it, exciting when you floor it.

Weight Savings Breakdown

Stock ITR exhaust components are heavy. A DC Sports cat-back saves about 10 lbs, while the full header-back saves 15–20 lbs. Removing weight off the nose and rear helps balance the chassis. Combined with a lighter flywheel and intake, this reduces rotational and unsprung mass, improving acceleration and braking.

Before installing, check your local laws. In many states, replacing the catalytic converter with a test pipe is illegal for street use. DC Sports offers a “Street” version with a high-flow cat that passes smog in most areas. The race version (no cat) is strictly for off-road or track use.

Noise Levels

At idle, the DC Sports cat-back measures ~70–75 dB – barely louder than stock. At full throttle, it hits ~90–95 dB, which is acceptable at most tracks with sound limits (typically 95 dB or 100 dB). If you’re concerned about noise complaints, consider the optional resonated test pipe.

Pro tip: If you drive to track days, keep the stock exhaust to swap back for strict sound curfews. Many ITR owners store the stock system for this purpose.

Compatibility with Other Mods

A DC Sports exhaust works well with common ITR upgrades:

  • Cold air intake (CAI): Complements the exhaust by improving induction flow. Expect another 3–5 hp synergy gain.
  • ECU tune (Hondata/AEM): A tune maximizes the benefit of reduced backpressure. Without tuning, you still see gains, but a flash will smoothen the air/fuel ratio and add 5–8 hp on top.
  • Upgraded throttle body: Paired with the exhaust, a 65mm or 68mm TB improves top-end flow even more.
  • Lightweight flywheel: Reduces rotational inertia, making the engine rev faster – perfect match with the exhaust.

If you plan to add forced induction (turbo or supercharger) later, a DC Sports cat-back can still be used, but you’ll need a custom downpipe and perhaps a larger test pipe to accommodate the turbo’s output.

Maintenance and Longevity

Stainless steel is corrosion-resistant but not immune to discoloration from heat. To keep your DC Sports exhaust looking great:

  • Clean regularly: Use a mild soap and water, then a stainless steel polish to remove road grime. Avoid abrasive pads.
  • Inspect hangers and clamps: Rubber isolators can crack after 3–5 years. Replace them with OEM or polyurethane for a lifetime durability.
  • Check for exhaust leaks annually: A steady exhaust leak can lead to unwanted raspiness and reduced performance.
  • Apply anti-seize to bolts each time you remove the exhaust: This prevents the nuts from seizing to the studs – a common issue on older cars.

With proper care, a DC Sports exhaust will outlast your ownership. Many ITR enthusiasts report 10+ years of trouble-free service.

Conclusion

Installing a DC Sports exhaust on your Acura Integra Type R is one of the best modifications for the money. You gain noticeable horsepower and torque, a more aggressive sound, and a weight reduction that sharpens the car’s dynamics. The installation is straightforward for a DIYer, and the cost is reasonable compared to exotic brands. If you want a system that delivers daily-driver manners with a weekend-warrior bite, the DC Sports cat-back or header-back is a proven choice.

For more technical details and community install threads, check out Team Integra and Honda-Tech forums. And remember – always respect local noise and emissions laws to keep your ITR street-legal and track-friendly.