High-flow cold air intake kit for 1990-2001 Acura Integra GS, RS, LS, and GS-R (DC2/DC4). Fits B18A1, B18B1, and B18C1 engines. Mandrel-bent aluminum intake tube with black powder-coated finish and dry reusable cone filter. +5-10 HP, sharper throttle response, and amplified VTEC crossover sound. Bolt-on installation in 30-60 minutes — no tuning required.

Overview

Honda's B-series intake design left significant airflow on the table — the factory airbox on the 1990-2001 Integra routes intake air through a restrictive multi-chamber plastic resonator and paper filter panel, prioritizing cabin silence over volumetric efficiency. On B18A1/B18B1 non-VTEC engines, this translates into a lazy low end. On B18C1 VTEC engines, it muffles the iconic crossover roar that Integra owners buy these cars to experience.

The FLASHARK Cold Air Intake Kit replaces the entire factory airbox with a 2.75-inch mandrel-bent aluminum intake tube and a high-flow dry cone filter that draws cooler, denser air from the fender well — away from exhaust manifold heat. Dyno testing shows gains of 5-10 HP and measurable mid-range torque improvement, with the most noticeable difference in the 3,500-5,500 RPM zone where the B-series does its best work. The factory ECU adapts automatically via fuel trim learning — no reflash needed.

Installation is a straightforward bolt-on using factory mounting points: 30-60 minutes with basic hand tools, all hardware included. The dry filter is washable and reusable, eliminating recurring paper replacement costs. And the induction sound under throttle — especially at VTEC engagement — finally matches what the B-series was engineered to deliver.

Key Features

Mandrel-Bent Aluminum Intake Tube — 2.75-inch 6061 aluminum with smooth internal walls eliminates the turbulence of the factory plastic tract. Black powder-coated finish resists corrosion and engine bay heat.

High-Flow Dry Cone Filter — Oil-free cotton gauze media captures debris without coating your MAF sensor. Washable and reusable — no oil recharge kits needed.

Black Powder-Coated Heat Shield — Steel shield isolates the filter from exhaust manifold heat and directs cooler fender-well air toward the intake. The black finish matches the factory engine bay.

True Bolt-On Fitment — Pre-drilled mounting brackets align with factory holes on DC2 and DC4 chassis. All couplers, clamps, and hardware included.

MAF & Sensor-Ready — Integrated bungs and couplers for factory intake air temperature sensor and PCV breather. No check engine light when properly installed.

VTEC-Ready Airflow — A larger tube diameter and free-flowing filter support the airflow demand spike at VTEC crossover (~4,800 RPM on B18C), delivering crisp engagement and an amplified induction roar that Integra owners want.

Specifications

Brand: FLASHARK
SKU: FLIS25003
Material: 6061 Aluminum tubing
Tubing Finish: Black powder-coated
Tube Diameter: 2.75" (70mm)
Filter Type: Dry (no oil required)
Filter Media: Cotton gauze
Filter Style: Cone
Filter Color: Red
Installation: Bolt-on, 30-60 minutes
Warranty: 1 Year

Package Includes

1x Black powder-coated 6061 aluminum mandrel-bent intake tube
1x Black powder-coated steel heat shield
1x Red dry cotton gauze cone air filter
1x Silicone coupler set with stainless steel clamps
1x PCV breather hose
1x Mounting bracket and hardware kit