M/T RZ34 Z with A/T Axleback Exhaust. Sound clip inside

[JakeF777]

Wanted to chime in and share my experience for anyone considering the Remark axleback setup or debating resonated vs. non-resonated.

I started last year by removing the muffler and installing the Remark axleback. It sounded great at first with an aggressive and deep tone, but the interior noise got old pretty quickly. Between the drone and certain frequencies rattling the cabin, it wasn’t enjoyable for daily driving or longer trips.

A few months later I added the resonated mid-pipe from Remark, and it made a huge difference. The tone mellowed just enough and most of the drone was gone. I finished the setup last week by adding the Remark Y-pipe, and I’m honestly thrilled with how it all came together. Outside the car it has a strong and clean sound. Inside, it’s smooth with no drone, no rattles, and no buzzing like I had when the manual exhaust was straight piped.

The quality of the system is excellent. I was really impressed with the fit and finish, and the exhaust tips sit perfectly against the bumper. It looks just as good as it sounds.

One thing I really like about the Remark system is that you can build it gradually. Since they sell each section separately, it’s easy to test out each part and upgrade at your own pace. Just wanted to drop my feedback in case anyone else starts with just the axle-back and ends up frustrated with cabin noise. The full system completely changes the driving experience.

PM sent

 

[Kimbonits]

Using the AI machine:

Regulatory Differences

• Testing Procedures: Noise regulations require different test methods for manual versus automatic cars. In a manual car, the test typically requires a full-throttle run at a specific speed and gear (e.g., 2nd or 3rd gear) until it reaches peak power RPM. In an automatic car, the throttle is applied "as fully as will ensure maximum acceleration without operating kickdown" (forced downshift), and engineers program the transmission to stay in a higher, quieter gear during the test.
• Quieter Manual Exhaust: To pass these stringent noise tests, particularly in regions like California, Nissan had to equip the manual Z with a quieter, larger rear muffler compared to the automatic version.
• Louder Automatic Exhaust: Conversely, the automatic version is allowed a louder exhaust, featuring a smaller rear muffler and resonators on the front Y-pipe to manage the sound output. The result is that the stock automatic Z is noticeably louder than the stock manual Z.

 

[Kimbonits]

• Stock 9AT vs. Nismo Exhaust: The stock 9AT exhaust is already louder than the stock manual exhaust. The Nismo exhaust, available as a separate upgrade or standard on the Nismo model, is a specific cat-back system designed for a sportier note and is only slightly louder than the stock automatic exhaust.

 

[Who.Am.Eye.2716]

• Stock 9AT vs. Nismo Exhaust: The stock 9AT exhaust is already louder than the stock manual exhaust. The Nismo exhaust, available as a separate upgrade or standard on the Nismo model, is a specific cat-back system designed for a sportier note and is only slightly louder than the stock automatic exhaust.

This statement is incorrect that the Nismo exhaust is a standard option on the Nismo. The Nismo uses the same exhaust that is in all 9AT models.

Maybe AI is referring to the 370z Nismo

 

[Mugzilla]

If there's a 6MT owner on here that wants to muffler delete, but would want a resonated mid-pipe off of a 9AT, check the FOR SALE SECTION OF THE FORUM .