Most designs of the time therefore included secondary air injection, which injected air into the exhaust stream. This increased the available oxygen, allowing the catalyst to function as intended. Cat-back exhaust systems replace every component behind the catalytic converter, including most piping, mufflers, resonators, and tailpipes.

This exhaust is going to sound the deepest and give you some nice pops and bangs, while also giving you real world WHP and TQ gains. We’ve seen as much as +12 WHP when we tested our turbo-back for the 2022+ Honda Civic! For this version, we do recommend a tune and a device like a Ktuner V2 or Hondata Flashpro to take full advantage. Since the OEM catalyst is replaced with the downpipe, the Turbo-back system is sold for Race Use Only. A cat-back exhaust system replaces the stock exhaust components from the catalytic converter back to the exhaust tips.

One issue is that the system can become clogged with dust and debris over time, causing reduced performance. This can be remedied by regularly cleaning the system with compressed air or a soft brush. Finally, it's always a good idea to check for leaks after installation.

The package is designed to maximize the performance of the Ford Mustang giving the vehicle a wider track with all the necessary suspension and braking systems to balance out the package. Introducing the 2024 Roush F-150, the perfect fusion of bold design, aggressive styling and high-performance upgrades. Each of the twin pipes are 50mm and the junction is 60mm but it quickly necks down to 50mm as it enters the center resonator. The resonator is a straight through 50mm perforated tube and some high frequency sound is absorbed.

Considering cat-back exhausts replace more restrictions, they typically offer increased performance and noise compared to axle-back systems