So, you're looking to boost the sound and performance of your 2015 Grand Cherokee SRT with a new exhaust system? Awesome choice, guys! Upgrading the exhaust is one of the most popular mods for a good reason. It not only unleashes that throaty roar we all crave but can also improve horsepower and torque. This guide dives deep into everything you need to know about upgrading the exhaust on your 2015 Grand Cherokee SRT, from understanding the stock system to choosing the right aftermarket option and getting it installed. Let's get started!

Understanding the Stock Exhaust System

Before you start ripping out your factory exhaust, it's essential to understand what you're working with. The stock exhaust system on the 2015 Grand Cherokee SRT is designed to be relatively quiet and efficient for everyday driving. It typically consists of exhaust manifolds connected to the engine, catalytic converters to reduce emissions, a resonator to further muffle sound, a muffler to significantly quiet the exhaust, and tailpipes that exit at the rear of the vehicle. The stock system prioritizes noise reduction and emissions compliance over maximizing performance. Now, you might be wondering, "Why upgrade if it's already doing its job?" Well, while the stock system is functional, it's also restrictive. The factory muffler and resonator, in particular, can significantly limit exhaust flow, which in turn reduces engine power. Upgrading to an aftermarket exhaust system can free up that flow, allowing the engine to breathe easier and produce more horsepower and torque. Beyond the performance gains, many owners simply want a more aggressive exhaust note that matches the sporty character of the SRT. The stock exhaust is often described as muted or even boring, especially compared to the aftermarket options available. Understanding the components of your stock system will also help you make informed decisions when choosing an aftermarket exhaust. For example, if you're primarily concerned with sound, you might opt for a cat-back system that replaces everything from the catalytic converters back, leaving the factory converters in place for emissions compliance. Or, if you're looking for maximum performance gains, you might consider a full exhaust system that includes headers and high-flow catalytic converters, although this may require tuning and may not be legal in all areas. So, take a look at your stock system, familiarize yourself with its components, and start thinking about what you want to achieve with your upgrade. This foundational knowledge will be invaluable as you move forward in the exhaust upgrade process. Don't skip this step; it's crucial for making the right choice and ensuring a successful installation. Plus, you'll sound like a pro when you're talking to the exhaust shop!

Choosing the Right Aftermarket Exhaust System

Okay, you're ready to ditch that stock exhaust and unleash the beast within your SRT. But with so many options on the market, how do you choose the right one? Don't worry, I've got you covered. Let's break down the different types of aftermarket exhaust systems and the factors you should consider before making a purchase. First, let's talk about the different types of systems: Cat-Back Systems: These systems replace everything from the catalytic converters back to the tailpipes. They're a popular choice because they offer a good balance of performance gains, sound improvement, and ease of installation. Since they retain the factory catalytic converters, they're generally emissions-legal in most areas. Axle-Back Systems: These are the simplest type of exhaust upgrade, replacing only the mufflers and tailpipes. They're relatively inexpensive and easy to install, but they offer the least performance gains. The primary benefit of an axle-back system is improved sound. Header-Back or Full Systems: These systems replace the entire exhaust system, from the exhaust manifolds (headers) to the tailpipes. They offer the most significant performance gains but are also the most expensive and complex to install. Full systems may also require tuning and may not be emissions-legal in all areas. Now, let's consider the factors to keep in mind when choosing an exhaust system: Sound: This is often the primary consideration for many owners. Do you want a deep, throaty rumble? Or a high-pitched, race-inspired scream? Listen to sound clips of different exhaust systems online to get an idea of what you like. Performance: If you're after maximum horsepower and torque gains, you'll want to choose a system with larger diameter piping and less restrictive mufflers. Keep in mind that performance gains may require tuning. Emissions: Make sure the exhaust system you choose is legal in your area. Check your local emissions regulations before making a purchase. Material: Exhaust systems are typically made from either aluminized steel or stainless steel. Stainless steel is more durable and resistant to corrosion, but it's also more expensive. Budget: Exhaust systems can range in price from a few hundred dollars to several thousand. Set a budget before you start shopping to narrow down your options. Brand Reputation: Stick with reputable brands that have a proven track record of quality and performance. Some popular brands for the Grand Cherokee SRT include Borla, Corsa, Magnaflow, and Flowmaster. Choosing the right exhaust system can be a daunting task, but by considering these factors and doing your research, you can find the perfect system to meet your needs and preferences. Don't be afraid to ask for advice from other SRT owners or exhaust specialists. They can provide valuable insights and recommendations based on their own experiences.

Installation Options: DIY vs. Professional

So, you've got your shiny new exhaust system sitting in your garage, ready to be installed. Now comes the big question: Do you tackle the installation yourself, or do you leave it to the professionals? Both options have their pros and cons, so let's weigh them out. DIY Installation: If you're a confident DIYer with some mechanical experience, installing an exhaust system yourself can save you a significant amount of money on labor costs. Plus, there's a certain satisfaction that comes from knowing you did the job yourself. However, DIY installation also comes with its challenges. You'll need the right tools, including a socket set, wrenches, a jack and jack stands, and possibly a saw or grinder to remove the old exhaust system. You'll also need to be comfortable working under your vehicle and potentially dealing with rusty or corroded bolts. And, of course, there's always the risk of making a mistake that could damage your vehicle or the new exhaust system. Professional Installation: Hiring a professional exhaust shop to install your new system will cost you more upfront, but it can also save you time, hassle, and potential headaches. Professional installers have the experience, tools, and equipment to get the job done quickly and efficiently. They can also ensure that the exhaust system is properly aligned and sealed to prevent leaks. Plus, if anything goes wrong during the installation, they're responsible for fixing it. When choosing an exhaust shop, be sure to do your research and read reviews. Look for a shop that has experience working on Grand Cherokee SRTs and that offers a warranty on their work. Here's a quick rundown of the pros and cons of each option: DIY Installation

Pros:

• Cost savings on labor
• Sense of accomplishment

Cons:

• Requires mechanical experience and tools
• Risk of mistakes or damage
• Can be time-consuming

Professional Installation

Pros:

• Ensures proper installation
• Saves time and hassle
• Warranty on work

Cons:

• Higher upfront cost

Ultimately, the decision of whether to DIY or go with a professional depends on your skills, experience, and budget. If you're comfortable working on cars and have the necessary tools, DIY installation can be a rewarding experience. But if you're unsure of your abilities or simply don't have the time, hiring a professional is the safer and more convenient option.

Potential Performance Gains and Sound Improvement

Alright, let's talk about the good stuff: performance gains and sound improvement! After all, those are the two main reasons why most of us upgrade our exhaust systems in the first place. So, what can you expect from a new exhaust on your 2015 Grand Cherokee SRT? Performance Gains: The amount of horsepower and torque you gain from an aftermarket exhaust system will vary depending on the type of system you choose, the quality of the components, and whether or not you get a tune. In general, you can expect to see gains of around 10-30 horsepower and 15-35 lb-ft of torque with a cat-back or full exhaust system. These gains are typically most noticeable in the mid-range and upper-end of the RPM range, where the stock exhaust system is most restrictive. To maximize performance gains, you'll want to choose a system with larger diameter piping, less restrictive mufflers, and smooth mandrel bends. You may also want to consider getting a tune to optimize the engine's air-fuel ratio and timing to take full advantage of the increased exhaust flow. Keep in mind that performance gains are not always guaranteed, and some exhaust systems may actually decrease performance if they're not properly designed or installed. That's why it's important to choose a reputable brand and have the system installed by a qualified professional. Sound Improvement: For many owners, the primary reason for upgrading the exhaust is to improve the sound. And let me tell you, a good aftermarket exhaust can transform the sound of your SRT from a tame purr to a ferocious roar. The specific sound you get will depend on the type of exhaust system and the mufflers used. Some systems are designed to be loud and aggressive, while others are more mellow and refined. You can listen to sound clips of different exhaust systems online to get an idea of what they sound like. When choosing an exhaust system for sound, consider your personal preferences and your driving environment. If you do a lot of highway driving, you may want to choose a system that's not too loud or drone-prone. On the other hand, if you're primarily interested in a head-turning exhaust note, you may want to go for a more aggressive system. Regardless of which system you choose, you can expect a significant improvement in the sound of your 2015 Grand Cherokee SRT with an aftermarket exhaust. Get ready to turn heads and enjoy the sweet sound of your engine!

Tips for Maintaining Your New Exhaust System

So, you've invested in a sweet new exhaust system for your 2015 Grand Cherokee SRT. Now, you want to make sure it lasts for years to come, right? Here are some tips for maintaining your new exhaust system and keeping it in top condition. Regular Inspections: Get under your ride and check the exhaust system regularly for any signs of damage, leaks, or corrosion. Look for things like cracks, rust spots, loose clamps, or damaged hangers. Catching these problems early can prevent them from turning into bigger, more expensive issues down the road. Cleaning: Road grime, salt, and other debris can accumulate on your exhaust system and cause corrosion. Clean your exhaust system regularly with soap and water to remove these contaminants. For stainless steel systems, you can use a stainless steel cleaner to keep them looking their best. Avoid using abrasive cleaners or scouring pads, as these can scratch the surface of the exhaust system. Tighten Clamps and Bolts: Over time, the clamps and bolts that hold your exhaust system together can loosen due to vibration and heat cycling. Check these fasteners regularly and tighten them as needed to prevent leaks. Avoid Harsh Chemicals: Keep harsh chemicals, such as degreasers and solvents, away from your exhaust system. These chemicals can damage the finish and accelerate corrosion. Address Problems Promptly: If you notice any problems with your exhaust system, such as leaks, rattles, or strange noises, address them promptly. Ignoring these problems can lead to further damage and more expensive repairs. Consider a Protective Coating: If you live in an area with harsh weather conditions or heavy road salt use, you may want to consider applying a protective coating to your exhaust system. This can help to prevent corrosion and extend the life of your exhaust system. By following these simple tips, you can keep your new exhaust system looking and performing its best for years to come. Regular maintenance is key to preserving your investment and ensuring that your SRT continues to sound and perform like a beast.

By understanding your stock system, selecting the right aftermarket components, considering installation options, and following maintenance tips, you'll maximize both performance and enjoyment.