The Acura Integra has earned an iconic reputation among enthusiasts for its lightweight chassis, rev-happy engines, and immense tuning potential. Whether you own a classic DC2 Integra Type R with a B18C5, a later DC5 RSX with a K20, or a daily-driven LS model, the right performance parts can transform your car into a truly thrilling machine. In this comprehensive guide, we dive deep into three of the most trusted brands for Acura Integra performance parts: Cobb Tuning, K&N Filters, and Skunk2 Racing. Each brand brings a unique strength to the table, from ECU calibration and intake systems to camshafts and suspension components. We’ll explore their product offerings, performance gains, and how to choose the best combination for your build.

Understanding the Acura Integra’s Performance Potential

Before selecting parts, it’s helpful to understand what you’re working with. The Acura Integra spanned four generations from 1986 to 2006, with the most popular tuner platforms being the third-generation (DC2/DB8, 1994–2001) and fourth-generation (DC5, 2002–2006). Under the hood, these cars feature Honda’s legendary B-series and K-series engines, known for their high-revving nature and aftermarket support. The Integra Type R, in particular, came with a limited-slip differential, upgraded brakes, and a tuned suspension – making it a favorite for track days and autocross.

Typical power upgrades for the Integra include improving airflow (intake and exhaust), optimizing engine management (ECU tuning), and upgrading valvetrain components (camshafts, springs, retainers). Suspension upgrades also play a critical role in translating power into lap times. The brands we’ll cover – Cobb, K&N, and Skunk2 – each address different aspects of this performance pyramid. Cobb is renowned for its AccessPort engine management and bolt-on parts, K&N dominates the air filtration space, and Skunk2 specializes in race-proven valvetrain and suspension components.

Cobb Tuning

Cobb Tuning has been a heavyweight in the performance industry for decades, particularly known for its AccessPort ECU tuning platform. While Cobb’s product line is most famously associated with Subaru and Mazda, they also offer a select range of performance parts for the Acura Integra (specifically the DC5 RSX-S with the K20A2 engine). Their focus is on delivering reliable, drivable power gains through refined calibration and quality hardware.

AccessPort ECU Tuning

The cornerstone of Cobb’s offering is the AccessPort – a handheld device that reflashes the factory ECU with optimized maps. For the DC5 Integra (RSX), Cobb provides off-the-shelf (OTS) maps for various stages of modification, from a simple intake upgrade to a full turbo setup. The AccessPort also allows real-time monitoring of parameters such as air-fuel ratio, intake air temperature, and knock correction. This level of control is invaluable for ensuring your Integra runs safely at elevated power levels.

Typical gains from a Stage 1 AccessPort tune on a stock RSX are around 10–15 whp, with improved throttle response and smoother power delivery. When combined with their intake and exhaust system (Stage 2), gains can reach 20–25 whp. The ability to data log and even create custom tunes (via software like ATR) makes the AccessPort a central component in any serious Integra build.

Intake and Exhaust Systems

Cobb’s SF Intake System for the DC5 Integra features a large, washable air filter and a heat shield designed to reduce intake air temperatures. The system is constructed from aircraft-grade aluminum and includes a silicone coupler. Installation is straightforward, and the sound is noticeably more aggressive without being obtrusive. The intake alone can contribute 5–8 whp when paired with a tune.

On the exhaust side, Cobb offers a full cat-back system with a straight-through muffler design. TIG-welded 304 stainless steel ensures durability and a deep tone. The system reduces back pressure while maintaining a refined sound – suitable for both street and track environments. Combined with the intake and AccessPort, this is a proven recipe for a reliable 25+ whp increase.

Additional Cobb Products for Integra

While Cobb’s direct parts for the Integra are limited to the DC5 RSX, they also produce intercoolers and turbo kits for forced-induction conversions. However, most naturally aspirated builds will focus on the AccessPort, intake, and exhaust. For earlier DC2 Integras, Cobb does not offer direct engine management, but their general philosophy of “tune first, parts second” remains applicable – you can use other ECU solutions (like Hondata or K-Pro) and still benefit from Cobb-style attention to detail.

External Link: Cobb Tuning Official Website

K&N Filters

K&N is a household name in the automotive world, recognized for its high-flow cotton gauze air filters that combine excellent filtration with increased airflow. For the Acura Integra, K&N offers a wide range of products spanning all generations, from the first-generation 1986–1989 models to the 2002–2006 DC5. Their philosophy is simple: let the engine breathe easier to unlock hidden power.

High-Flow Air Filters (Drop-In)

The simplest upgrade for any Integra is a K&N drop-in replacement air filter for the stock airbox. These filters use a cotton gauze element that flows significantly more air than paper filters while trapping just as much dirt (when properly oiled). The filter is also reusable – it can be cleaned and re-oiled using K&N’s recharge kit, making it a cost-effective long-term investment. Expect a mild but noticeable improvement in throttle response and a slight increase in intake noise. On a dyno, a drop-in filter alone might add 2–4 whp, but it becomes more valuable when combined with other modifications.

Intake Kits (Cold Air and Short Ram)

For more substantial gains, K&N offers complete intake kits that replace the factory airbox and piping. Their 69 Series Typhoon intake (short ram) and 63 Series Apollo (cold air) are popular choices for the Integra. The Typhoon positions the filter near the throttle body for a more aggressive sound, while the Apollo routes the filter into the front bumper or fender for cooler air. K&N’s cold air intake for the DC2 Integra B-series engines is a classic upgrade, typically yielding 5–10 whp with a proper tune. The included windshield washer bottle relocation kit makes for a clean install.

K&N also manufactures intake kits for the DC5 RSX K20, with similar gains. The kits come with a polished aluminum tube and a high-flow filter element. One advantage of K&N intakes is the million-mile warranty – the company backs the filter for the life of the vehicle, provided it’s maintained.

Performance Oil Filters

While often overlooked, K&N’s performance oil filters feature a welded nut for easy removal (no special tool required) and a high-flow media that maintains oil pressure at high RPM. For track-driven Integras, these filters are a smart complement to the air filter and intake upgrades. They are available for all Integra engine types, including B18, B20, and K20.

External Link: K&N Filters Official Site

K&N vs. Other Air Filters

While K&N is the market leader, there are competitors like AEM, Injen, and HPS. However, K&N’s reputation for consistent quality, ease of cleaning, and broad fitment makes it the go-to for many Integra owners. The trade-off is that some seriously high-volume race engines may require even higher-flow synthetic filters, but for street and moderate track use, K&N is more than sufficient.

Skunk2 Racing

Skunk2 Racing has established itself as a premier manufacturer of Honda and Acura performance parts, with a focus on race-proven components. Their product line spans intake manifolds, camshafts, cam gears, suspension arms, and braking components. For the Acura Integra, Skunk2 offers some of the most aggressive naturally aspirated upgrades available.

Intake Manifolds

Skunk2’s Alpha Series intake manifold is legendary among Integra enthusiasts. Designed for B-series and K-series engines, the Alpha manifold features larger plenum volume, tapered runners, and a 90mm throttle body opening (compared to the stock 60mm). This dramatically improves airflow at high RPM, unlocking significant top-end horsepower. On a built B18C5 with supporting mods, a Skunk2 Alpha intake manifold can add 15–20 whp above 6,000 RPM. The manifold is CNC-machined from billet aluminum and includes provisions for OEM sensors and fittings.

For the budget-conscious, Skunk2 offers the Pro Series intake manifold, which uses a cast construction but retains similar runner geometry. It’s a popular choice for street cars looking for a power gain without the premium price tag.

Camshafts and Valvetrain

Skunk2’s camshafts are where the brand truly shines. Their Stage 1 cams are excellent for a mild street build, offering 10–15 whp gains with a slight lope at idle. The Stage 2 and Stage 3 cams require upgraded valvetrain (springs, retainers) and often a higher compression ratio to fully realize their potential. The Stage 3 “Turbo” cam is actually designed for high-boost applications, while the Stage 2 “Race” cam is ideal for all-out naturally aspirated track cars. When paired with Skunk2’s cam gears, you can fine-tune valve timing for optimal power delivery across the rev range.

Installation of camshafts is not for the faint of heart – it requires timing belt removal, careful valve lash adjustment, and often ECU retuning. However, for those willing to invest the time, Skunk2 cams can push an Integra’s B18C1 or K20A2 past 220 whp naturally aspirated.

Suspension Components

Skunk2 also produces a full line of suspension parts: coilovers, front and rear camber kits, control arms, and sway bars. Their Pro-C coilover system features adjustable damping height and ride stiffness, making it suitable for both street and competition use. The forged lower control arms reduce unsprung weight and allow for precise alignment adjustments. For Integra owners who plan to track their car, Skunk2 suspension components are a natural choice to complement the engine upgrades.

External Link: Skunk2 Racing Official Website

Comparing Cobb, K&N, and Skunk2

Each brand excels in a different area, so the best choice depends on your goals. Cobb is the leader in ECU management and bolt-on parts for the DC5 Integra; if you own a DC2, you’ll need to look at Hondata or K-Management instead. K&N is the brand for filtration and simple intake upgrades that work across all generations with minimal hassle. Skunk2 is for the serious enthusiast who wants maximum naturally aspirated power and handling – their parts are often track-oriented and require more supporting modifications and tuning.

For a well-rounded build, consider using a K&N drop-in filter or intake, then a Skunk2 intake manifold and camshafts, and finally a Cobb AccessPort (for DC5) or Hondata (for DC2) to tune it all together. The synergy between these brands’ components can yield fantastic results.

Installation and Tuning Considerations

Installing performance parts on an Acura Integra is generally straightforward, but there are important nuances. Intake kits and exhaust systems can be done at home with basic hand tools – expect 2–3 hours for each. Camshaft and intake manifold swaps are more advanced, requiring timing marks alignment, torque specifications, and often a hydraulic press for valve spring removal. Always consult a service manual and consider having a professional perform the work if you’re not confident.

Critical: Any engine modification that changes airflow or compression should be accompanied by ECU tuning. Running Skunk2 camshafts or a larger intake manifold on the stock ECU will likely result in poor drivability, check engine lights, and potentially engine damage. Cobb’s AccessPort and alternative systems like Hondata’s K-Pro or S300 allow custom calibration. Many reputable tuners specialize in Honda/Acura engines and can dial in your combination safely.

Real-World Performance Gains

To give you an idea of what’s achievable, consider a typical DC5 RSX-S build: start with a K&N cold air intake (5 whp), add a Skunk2 Alpha intake manifold (15 whp at the top end), and a Stage 2 camshaft set (15–20 whp across the powerband). Then tune with a Cobb AccessPort, and you’re looking at a 220–230 whp naturally aspirated engine – a significant improvement over the stock 160 whp. With additional bolt-ons like a header and exhaust, 240+ whp is possible.

For a DC2 Integra Type R with a B18C5, a similar approach using K&N intake, Skunk2 Pro intake manifold, and Stage 2 cams with Hondata tuning can yield 200–210 whp, compared to the factory 195 hp at the crank. That may not sound enormous, but considering the lightweight chassis, the seat-of-the-pants difference is dramatic.

Conclusion

Selecting the right performance parts for your Acura Integra can transform it from a reliable daily driver into a thrilling track weapon. Cobb Tuning offers precision ECU control and complementary bolt-ons for the DC5 RSX, K&N provides reliable air filtration and intake solutions for all generations, and Skunk2 delivers race-proven intake, valvetrain, and suspension components for the serious enthusiast. By understanding what each brand does best and how they can work together, you can build an Integra that punches far above its weight class – whether you’re chasing apexes on a road course or simply enjoying a spirited backroad drive.