Acura Integra DE4 Catback: Sound and Fit Guide

By REMARK Exhaust | Published: 2026-10-20

Category: Product Reviews

Learn how the Link Loop catback transforms the Integra DE4's tone and where it shines on the street. Includes fitment notes and install steps.

Quick Answer

For a 2023+ Acura Integra DE4, the Link Loop catback delivers a livelier exhaust note and better high-RPM response without turning the cabin into a drone zone. Here's what to expect and how to install it.

What the Link Loop design does for the Integra DE4

The Link Loop catback is a full 304 stainless steel system that removes the rear mufflers. That alone would usually make the car louder, but the Link Loop chamber keeps the note controlled, so you get a more present sound without constant boom on the highway.

The 1.5L turbo engine also breathes easier with the less restrictive piping, which helps most noticeably when you're climbing past 4,000 rpm. It's not a night-and-day power jump, but the engine feels freer and more willing to rev.

Fitment notes for the DE4 sedan

This system is built for the 2023+ Integra A-Spec, so it bolts up to the factory hangers and flanges. The main fitment decision is the tip option, which changes the rear look but not the sound. If you keep the stock rear valance, check the tip size and angle before finalizing the install.

Expect a straightforward install if you've done a catback before. The system uses standard band clamps, so you can adjust the tips before tightening everything down.

Install Steps

Gather tools and prep the car: You'll need jack stands, a 12mm socket, a 14mm socket, a flathead screwdriver, and penetrating oil. Let the exhaust cool completely, then spray the factory bolts and hangers with penetrating oil and let it sit for 10 minutes. A common mistake is skipping the oil and snapping a hanger bolt.
Remove the factory catback: Support the mid-pipe with a jack or a second person, then unbolt the flange at the catalytic converter and the hangers. Lower the stock system carefully to avoid bending the hangers. A common mistake is forgetting to disconnect the rear O2 sensor harness if it's routed near the hanger. Check the rubber hangers for cracks while they're off—replace any that look dry or split.
Position the new catback loosely: Slide the Link Loop catback into place and loosely fit all the band clamps and hangers. Leave everything finger-tight so you can adjust tip alignment and pipe clearance. A common mistake is tightening the front clamp first, which locks the system out of position.
Align tips and check clearance: Adjust the tips so they sit evenly in the rear valance and have at least 1/2 inch clearance from the bumper and heat shields. Rotate the hangers as needed to avoid contact with the underbody. A common mistake is leaving the tips too close to the bumper, which can cause heat damage over time. Before final tightening, do a quick visual check that the mid-pipe doesn't touch the driveshaft or fuel lines.
Tighten everything and test: Starting from the front, tighten all clamps and hanger bolts to spec. Start the engine and listen for leaks at the flanges and clamps. A common mistake is over-tightening the band clamps, which can deform the pipe and cause a leak. After a short drive, re-check the clamps—they can loosen slightly as the system heats and cools.

Product Facts

Link Loop Catback Exhaust - Acura Integra DE4 (2023+): Full 304 stainless steel catback that eliminates the rear mufflers while using a Link Loop design to control the exhaust note. You get a more aggressive tone and less restriction without the constant drone that usually comes from deleting mufflers.
Link Loop Catback Exhaust - Acura Integra DE4 (2023+)