TSP Hibiki Series Valved Exhaust System for 22-26 Honda Civic Si / 23-26 Acura Integra 1.5T [FE1/DE4] Read reviews

The first and only valved exhaust built for the 11th gen Civic Si & 5th gen Integra 1.5T. Frontpipe-back, dual exit, 304 stainless, with a remote-controlled valve and both resonated and non-resonated midpipes in the box. Valve closed, it's quiet enough for a 6am start. Valve open, it isn't.

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Fitment

Confirmed:
2022–2026 Honda Civic Si
2022-2024 Honda Civic EX (Sedan)
2022-2024 Honda Civic Touring (Sedan)
2023+ Acura Integra Base
2023+ Acura Integra A-Spec

A car goes on that list after it’s been on the lift, not before.
Not expected to fit: 2.0L naturally aspirated, turbocharged, and hybrid models. None of those are confirmed, and we don’t expect them to work. If that changes we’ll say so here.

Fits both factory and aftermarket frontpipes, so a stock car and a built one bolt up the same way.

What it does

Until now the choice was the one everybody knows. Go loud and accept that a four-hour drive turns into a headache somewhere around 2,400 rpm, or stay quiet and wonder why you bought it. That isn't a compromise so much as picking which half of the car you stop enjoying.

The Hibiki runs a remote-controlled valve. Closed, the volume drops and the highway drone goes with it, and it will tame an aftermarket catted or catless downpipe. Open, the car breathes. One button from the driver's seat. No app, no menus, no waiting for a phone to pair.

Four exhausts, one purchase

Most valved systems make you pick resonated or non-resonated when you order, and then you live with it. We ship both. Two midpipes and two valve positions means four sound profiles from the same system, and the quietest and the loudest are a long way apart.

The first and last are the two exhausts most people are choosing between when they shop. Here they're the same part, and the difference is a midpipe swap and a button. Change your mind in six months and the other pipe is already on your shelf.

Install

The controller wires in with a fuse tap and tucks up behind the trim. No cheap 12V plug hanging off the dash, nothing to route around your knees. Once it's in, the only sign it's there is the fob in your pocket.

That's also the fiddliest part of the job. Bolting the exhaust up is straightforward. Getting the wiring into the cabin and doing it neatly is what takes the time, and it's worth doing properly.

It's a frontpipe-back system, so you're working under the length of the car and you'll want it up in the air. Doable on jack stands if you're patient, a lot easier on a lift.

Developed on our own car

This isn't an off-the-shelf design with a new sticker on the box. The Hibiki was developed and tested on the TSP FE1, our shop car, over real miles. Every bend, hanger and flange was checked on the actual platform, which is also why the confirmed fitment list is short.

Specifications

• Part number: TSP-HC11-HIBIKI-POL
• System: Frontpipe-back, dual exit
• Material: 304 stainless steel
• Piping: 3" mandrel-bent, TIG welded
• Tips: Polished 4"
• Valve: Remote fob, fuse-tap wiring
• Midpipes: Resonated and non-resonated, both included
• Frontpipe: Fits OEM and aftermarket
• Fitment: 2022–2027 Civic Si, 2023+ Integra 1.5T
• Warranty: 1 year

What's in the box

• Frontpipe-back dual-exit system
• Resonated and non-resonated midpipes
• Remote control fob
• Valve controller and wiring
• Hardware kit: bolts, gaskets, nuts, clamps
• Adjustable hanger rubber mounts

Before you buy