The Ultimate Guide to Choosing a G35 Cat Back Exhaust

There’s nothing wrong with the stock exhaust on a G35. It does the job. It’s quiet. It keeps things civilized. But the day usually comes when you want a little more attitude from your Infiniti — a deeper growl, sharper throttle response, and maybe a few heads turning when you roll into a meet. That’s when a G35 cat back exhaust becomes more than just another upgrade; it becomes the upgrade.

Once you fall in love with that VQ sound, there’s no going back. Trust me.

What Makes a Cat Back Exhaust Worth It?

You bought a G35 for a reason. It’s stylish, quick, and easy to love. But Nissan/Infiniti had to design the stock exhaust to please everyone, including people who think loud pipes equal trouble. So the system is restricted, holding back a ton of natural sound and performance.

With an Infiniti cat back exhaust, you’re letting the engine breathe. The power delivery feels quicker, smoother. Acceleration doesn’t feel lazy anymore. And the sound? Pure satisfaction every time you hit the gas. Even that little crackle on downshifts — that’s the good stuff.

Find Your Ideal Sound

Think about what kind of personality your G35 has (or what personality you want it to have). Some owners want that deep, clean tone that feels premium. Others want a more aggressive note — something that wakes up tunnels and makes friends laugh when they ride shotgun.

Volume matters too. It’s easy to get excited about a super loud setup, but remember: you still have neighbors. And morning starts. And highway drone is real. So choose a sound that you’ll love every day, not just on Friday nights when the adrenaline kicks in.

There’s no “right” sound. There’s only your sound.

Material: Stainless Steel or Regret Later

Let’s keep this simple. Stainless steel is the way. It handles weather, heat, and age way better than cheaper metals. You want your exhaust to look as good in two years as it does on install day.

If a price looks too good to be true, it’s probably mild steel wrapped in shiny photos.

Pipe Diameter — Bigger Isn’t Always Better

You’ll see a lot of talk about 2.5-inch vs. 3-inch piping. Here’s the deal:

Too small, and the VQ can’t exhale. Too big, and you lose that tight low-end torque that makes the car fun in normal driving.

A 2.5-inch setup is perfect for most bolt-on G35s. If you’re going turbo or building serious horsepower, then yeah — consider 3-inch. Otherwise, enjoy the perfect middle ground.

The goal is flow, not flexing.

Coupe vs. Sedan — Fitment Isn’t Universal

The G35 might seem like one model, but the coupe and sedan have different layouts. Ground clearance changes. Bumper cutouts vary. A dual-exit exhaust looks killer, but only if it sits straight and doesn’t rattle like a box of tools.

Always double-check compatibility before you buy. A “bolt-on” kit should actually bolt on — not require cutting or creative language in the garage.

Daily Driving or Weekend Thrills?

This is where honesty helps. Do you drive your G35 to work every day? Or is it mostly for fun?

A daily driver needs a refined tone you can live with on long trips. A weekend toy can be louder and rowdier, because comfort isn’t the point — vibes are.

Pick the setup that fits your real life, not your fantasy Instagram reel.

Brand Reputation Matters

Anyone can bend metal and call it an exhaust. But the difference between a great system and a cheap headache usually shows up fast:

• Weld quality
  • Fitment accuracy
  • Drone control
  • Longevity

Read reviews from actual G35 owners. Watch sound videos. Ask around. People love talking about their cars — and they’ll happily warn you about what not to buy.

The Real Reward

The first time you start your car after installing a new g35 cat back exhaust, it hits you. That deeper rumble. The sharper throttle response. The way the car suddenly feels more alive, like it’s been waiting for this upgrade since day one.

You’ll notice it every time you drive. You’ll find excuses to downshift. You’ll roll down the windows just to hear it echo off buildings.

That excitement doesn’t fade.

Final Thoughts — Make It Your Own

Your G35 doesn’t need to sound like everyone else’s. Go for the tone that makes you grin. Go for the setup that fits your style, your driving habits, and your car’s personality.

Once you dial in the perfect Infiniti cat back exhaust, everything clicks. You feel more connected to the car. The drive becomes something you look forward to — even if it’s just a late-night cruise around the block.

Because at the end of the day, this isn’t just an exhaust mod. It’s a reminder of why you fell in love with the G35 in the first place.