G37 Sedan ISR Single Exit Exhaust: DIY Installation Guide

by Jhon Lennon 58 views

Hey guys! So, you're looking to spice up your Infiniti G37 sedan with a sweet-sounding ISR single exit exhaust, huh? Awesome choice! Not only does it add a killer sound, but it also gives your ride a more aggressive look. Installing an ISR single exit exhaust on your G37 sedan is a pretty manageable DIY project, even if you're not a seasoned mechanic. This guide will walk you through the entire process, step-by-step, making it as painless as possible. We'll cover everything from gathering your tools to firing up that new exhaust and enjoying the rumble. Let's get started, shall we?

Why Choose an ISR Single Exit Exhaust for Your G37 Sedan?

First things first, why the ISR single exit exhaust? Well, for starters, they're known for their quality and affordability. You get a great bang for your buck without sacrificing performance or sound. The single exit design gives your G37 a unique, sporty appearance, setting it apart from the crowd. The deep, throaty sound will turn heads wherever you go. Plus, many owners report a noticeable improvement in exhaust flow, which can translate to a slight increase in horsepower and torque. So, it's not just about looks and sound; there are performance benefits too!

Before we dive into the install, let's talk about the key benefits. The ISR single exit exhaust system is designed with performance in mind. The free-flowing design helps to reduce backpressure, which can lead to better engine efficiency and more power. The materials used, typically stainless steel, are built to last, resisting corrosion and maintaining their appearance over time. The sound is arguably the biggest draw, delivering a deep, aggressive tone that really lets your G37's engine sing. This not only enhances the driving experience but also gives your car a more distinct personality. The single exit design also simplifies the system, reducing weight compared to some dual-exhaust setups. All these factors combined make the ISR exhaust a fantastic upgrade. By following the guide, you’ll not only learn how to install the system but also understand the mechanical advantage of each part. You will also avoid any costly installation fees. This makes it an amazing deal! So, whether you are a car enthusiast looking to start your DIY journey or an experienced mechanic, these benefits should get you excited.

Tools and Parts You'll Need

Alright, let's get you prepared. Before you even think about jacking up your G37 sedan, you'll need to gather the necessary tools and parts. This will make the installation process much smoother and prevent any frustrating trips to the hardware store mid-project. Here’s a checklist:

  • ISR Single Exit Exhaust Kit: Obviously! Make sure you have the correct kit specifically designed for your G37 sedan. Double-check the year and model to ensure a perfect fit.
  • Jack and Jack Stands: Safety first! You'll need a reliable jack to lift your car and sturdy jack stands to support it while you work underneath. Never work under a car supported only by a jack!
  • Wheel Chocks: To prevent the car from rolling, especially if you're on a slight incline.
  • Socket Set and Wrenches: A variety of sizes will be needed to remove the existing exhaust components. A metric set is essential.
  • Penetrating Oil (like PB Blaster): This stuff is your best friend when dealing with rusty bolts. Spray it on any stubborn bolts a few minutes before you try to loosen them. This will make your life so much easier!
  • WD-40 or similar lubricant: For easier fitting of exhaust parts.
  • Gloves: Protect your hands! Working with exhaust components can get messy and potentially hot.
  • Safety Glasses: Protect those peepers from any falling debris.
  • Torque Wrench: To tighten bolts to the correct specifications. Over-tightening can damage the exhaust or the car.
  • Exhaust Hangers: Make sure the existing ones are in good shape, and you might want some replacements, just in case.
  • Ratcheting Wrench Set: This set makes the job a lot easier and quicker.
  • PB Blaster or other penetrant: For rusted bolts.
  • Rubber Mallet: To help separate exhaust components that might be stuck together.
  • Work Light: To see what you are doing in those dark areas under the car.
  • Optional: Exhaust sealant or high-temperature silicone to ensure a tight seal at the connections. This isn't always necessary, but it can help prevent leaks.

Make sure to have all of these items on hand before you start. This preparation will make the installation much more enjoyable.

Step-by-Step Installation Guide

Now for the fun part! Here's a step-by-step guide to installing your ISR single exit exhaust on your G37 sedan. Take your time, follow these instructions carefully, and you'll be cruising with a new sound in no time.

Step 1: Preparation and Safety First

  1. Safety First: Park your G37 on a level surface and engage the parking brake. Chock the rear wheels for extra security.
  2. Lift the Car: Use the jack to lift the front of your car and securely place jack stands under the designated frame points. Always double-check that the car is stable before working underneath it.
  3. Spray Those Bolts: Grab your penetrating oil and generously spray all the bolts on the existing exhaust system, especially those connecting the exhaust to the catalytic converters and the mid-pipe. Let it sit for at least 15 minutes, or even longer for extra-stubborn bolts.

Step 2: Removing the Old Exhaust

  1. Disconnect the O2 Sensors: Locate the O2 sensors connected to the exhaust system. Unplug the electrical connectors. Usually, there is one near the catalytic converter. Be careful, they can be fragile.
  2. Loosen the Exhaust Components: Use your socket set or wrenches to loosen and remove the bolts connecting the exhaust to the catalytic converters or the Y-pipe. If the bolts are rusty, apply more penetrating oil and use some elbow grease! You might need to use a breaker bar for extra leverage.
  3. Detach the Hangers: Locate the rubber exhaust hangers that hold the exhaust system in place. Use a pry bar or screwdriver to carefully pry the exhaust hangers off their mounting points. WD-40 can help make this easier.
  4. Remove the Exhaust: Once all the bolts are removed and the hangers are detached, carefully lower the old exhaust system from the car. It might be in one or two pieces, depending on your setup. Be prepared for it to be heavy!

Step 3: Installing the ISR Single Exit Exhaust

  1. Assemble the Exhaust: Lay out all the components of your ISR single exit exhaust. Familiarize yourself with how they fit together. Some kits come pre-assembled, while others require you to connect the pipes.
  2. Attach the Mid-pipe: Start by connecting the mid-pipe (if applicable) to the catalytic converters or the Y-pipe. Use the provided hardware and tighten the bolts to the recommended torque specifications. Don't overtighten.
  3. Install the Muffler: Attach the muffler to the mid-pipe. Again, use the provided hardware. Ensure the muffler is aligned correctly, as you want the exhaust tip to exit the bumper nicely. Make sure there is enough space.
  4. Hang the Exhaust: Install the exhaust hangers onto the rubber mounting points. This can be tricky, so you might need to wiggle and adjust the exhaust to get them to fit properly. Make sure the exhaust is centered and doesn't rub against any other components.
  5. Tighten All Bolts: Go through the entire exhaust system and tighten all the bolts to the recommended torque specifications. Double-check everything to ensure nothing is loose.
  6. Reconnect the O2 Sensors: Plug the O2 sensors back into their connectors.

Step 4: Final Checks and Startup

  1. Double-Check Everything: Before you lower the car, give everything a final once-over. Make sure all the bolts are tight, the hangers are secure, and nothing is rubbing or touching other components.
  2. Lower the Car: Carefully lower the car back to the ground.
  3. Start the Engine: Fire up your G37 and listen for any exhaust leaks. You might hear a hissing sound if there are any leaks. If you do, go back and tighten the bolts or apply exhaust sealant as needed.
  4. Enjoy the Sound: Take your G37 for a spin and enjoy the new, aggressive sound of your ISR single exit exhaust! Be ready to turn some heads.

Troubleshooting Common Issues

Even with the best instructions, things can go wrong. Here are some common issues and how to solve them:

  • Stubborn Bolts: These are the bane of every DIY project. Use plenty of penetrating oil, let it soak, and use a breaker bar for extra leverage. If a bolt breaks, you might need to drill it out and use an extractor or replace the component.
  • Exhaust Leaks: If you hear a hissing sound, you have a leak. Check all the connections and tighten the bolts. Exhaust sealant can help seal stubborn leaks.
  • Exhaust Rubbing: Ensure the exhaust is properly aligned and doesn't touch any other components. Adjust the hangers or reposition the exhaust if necessary.
  • Muffler Tip Alignment: Adjust the exhaust hangers to get the muffler tip to sit where you want it. This might take some trial and error.
  • Difficulty Removing the Old Exhaust: Sometimes the old exhaust system can be rusted in place. In these cases, you might need to cut it off with a saw or grinder. Be careful not to damage any other parts of your car.

Final Thoughts and Maintenance

Installing an ISR single exit exhaust on your G37 sedan is a rewarding experience. You'll not only enhance the look and sound of your car but also gain valuable DIY experience. Once everything is installed, periodically check the bolts and connections to ensure everything is still tight. Keep an eye out for any signs of leaks or damage. Remember that your ISR single exit exhaust is made of high-quality stainless steel, but it still requires some care. Clean the exhaust tip regularly to maintain its shine, and consider applying a ceramic coating to protect it from rust and corrosion. Enjoy the new sound and the head-turning style of your G37! You've earned it!

This guide is a general overview, and instructions may vary slightly depending on your specific ISR exhaust kit. Always refer to the manufacturer's instructions for your particular kit. If you're unsure about any step of the process, it's always best to consult a professional mechanic. Now go out there and enjoy that sweet sound!