So, you're looking to seriously upgrade your 350Z's performance? You've probably heard whispers about the legendary APS twin turbo kit. Well, you're in the right place! Let's dive into why this kit is so sought after, what to consider before buying a used one, and how to make sure you're getting the most bang for your buck.

Why the APS Twin Turbo Kit is a Game-Changer for Your 350Z

The APS twin turbo kit isn't just some bolt-on upgrade; it's a complete transformation for your Nissan 350Z. The kit is known for its ability to deliver substantial power gains, significantly improving acceleration and overall driving experience. This kit is designed to provide a broad and linear power band, making the car more responsive and enjoyable to drive in various conditions. Unlike some other turbo kits that might give you a sudden surge of power, the APS system offers a smoother, more predictable delivery. This is crucial for maintaining control and maximizing performance, whether you're on the street or the track.

Beyond the raw power, the APS twin turbo kit is praised for its quality and engineering. APS (Advanced Power Systems) was a reputable company known for its attention to detail and robust designs. Their kits were built to withstand the stresses of forced induction, ensuring longevity and reliability. This is particularly important for a car like the 350Z, which is often driven hard and used for performance applications. The components used in the kit, such as the turbochargers, intercooler, and exhaust manifolds, were carefully selected and engineered to work together seamlessly. This integrated approach is what sets the APS kit apart from some of the more generic turbo kits on the market.

Another key advantage of the APS twin turbo kit is its relatively complete nature. The kit typically includes everything needed for installation, minimizing the need for additional parts and modifications. This can save you time, money, and headaches during the installation process. However, it's always a good idea to double-check exactly what's included with any used kit you're considering, as some parts may be missing or require replacement.

Finally, the APS twin turbo kit has a strong reputation within the 350Z community. Many owners have successfully installed and run these kits for years, achieving impressive performance results. This widespread adoption and positive feedback are a testament to the kit's quality and effectiveness. You can find numerous online forums and communities where owners share their experiences, offer advice, and provide support for APS turbo kit installations and tuning.

Finding an APS Twin Turbo Kit for Sale: What to Look For

Okay, so you're sold on the APS twin turbo kit. Now comes the hunt! Since APS is no longer producing these kits, you'll primarily be looking at used options. This requires a bit more diligence to ensure you're getting a good deal and a functional kit. Here's what to keep in mind:

• Completeness: This is HUGE. Verify exactly what's included in the sale. A complete kit will typically have the turbochargers, intercooler, intercooler piping, exhaust manifolds, downpipes, oil lines, coolant lines, fuel injectors, fuel pump, and engine management system (or piggyback ECU). Missing parts can be difficult and expensive to replace.
• Condition: Ask for detailed photos of all components. Look for signs of damage, wear, or corrosion. Pay close attention to the turbochargers. Check for shaft play (movement of the turbine shaft) as this can indicate worn bearings and potential turbo failure. Examine the intercooler for bent fins or leaks. Inspect the exhaust manifolds for cracks.
• Turbocharger Health: As mentioned, turbocharger health is critical. In addition to checking for shaft play, ask about the turbochargers' history. How many miles are on them? Have they been rebuilt? Are there any known issues? A turbocharger rebuild can add a significant cost to the project, so it's best to know upfront.
• Intercooler Condition: The intercooler is responsible for cooling the compressed air from the turbochargers, which is essential for maximizing power and preventing engine knock. Inspect the intercooler for any signs of damage, such as bent fins, leaks, or cracks. A damaged intercooler can significantly reduce its efficiency, leading to decreased performance and potential engine problems.
• Exhaust Manifold Integrity: The exhaust manifolds are subjected to extreme heat and pressure, so they are prone to cracking over time. Carefully inspect the manifolds for any signs of cracks, especially around the welds. Cracked manifolds can cause exhaust leaks, which can reduce performance and create unwanted noise.
• ECU/Fuel Management: The APS twin turbo kit often included a piggyback ECU or required aftermarket engine management to properly control the fuel and ignition. Find out what system is included (if any) and whether it's compatible with your 350Z. Tuning is crucial for a turbo setup, so factor in the cost of a professional tune if needed.
• Documentation: Does the seller have any installation instructions or documentation? This can be incredibly helpful, even if you're having a professional install the kit. It can also help verify that all the parts are present.
• Seller Reputation: Buy from a reputable seller, if possible. Check online forums and communities for feedback on the seller. Ask questions and get a feel for their knowledge and honesty.
• Price: Research the going rate for used APS twin turbo kits. Prices can vary depending on condition, completeness, and included components. Be wary of deals that seem too good to be true.

Installation Considerations for Your APS Twin Turbo Kit

Even if you're a seasoned mechanic, installing a twin turbo kit is a complex job. Here's what to consider:

• Professional Installation: Unless you have extensive experience with turbocharger installations and engine tuning, it's highly recommended to have the kit installed by a qualified professional. A professional installer will have the knowledge, skills, and tools necessary to ensure that the kit is installed correctly and that your engine is properly tuned.
• Tuning is Essential: Don't skip the tuning! A proper tune is absolutely critical to ensure your engine runs safely and reliably with the turbo kit. A professional tuner will adjust the fuel and ignition settings to optimize performance and prevent engine damage. Without a proper tune, you risk serious engine damage.
• Supporting Modifications: Depending on the boost level you're planning to run, you may need additional supporting modifications, such as upgraded fuel injectors, a higher-flowing fuel pump, and a stronger clutch. These modifications will help ensure that your engine can handle the increased power and torque.
• Boost Control: A boost controller allows you to adjust the amount of boost that the turbochargers produce. This can be a useful tool for fine-tuning performance and preventing overboost. There are two main types of boost controllers: manual and electronic. Manual boost controllers are simpler and less expensive, while electronic boost controllers offer more precise control and features.
• Gauges: Install gauges to monitor critical engine parameters, such as boost pressure, air/fuel ratio, and oil pressure. These gauges will provide valuable information about your engine's performance and can help you detect potential problems early on.
• Patience: Turbocharging a car is rarely a simple bolt-on affair. Expect some troubleshooting and fine-tuning to get everything running perfectly.

Alternatives to the APS Twin Turbo Kit

While the APS twin turbo kit is highly desirable, it's not the only option for forced induction on your 350Z. Here are a few alternatives to consider:

• Other Twin Turbo Kits: Several other manufacturers produced twin turbo kits for the 350Z, such as GReddy and Stillen. These kits may offer similar performance to the APS kit, but they may also have different characteristics and features. Research different kits and compare their pros and cons to find the best fit for your needs.
• Single Turbo Kits: Single turbo kits are another popular option for forced induction on the 350Z. Single turbo kits typically offer simpler installation and potentially lower cost compared to twin turbo kits. However, they may also have different performance characteristics, such as more turbo lag.
• Supercharger Kits: Supercharger kits offer a different approach to forced induction. Superchargers provide instant boost response and a more linear power curve compared to turbochargers. However, they may not offer the same peak power potential as turbocharger kits.
• Engine Swap: For extreme power gains, consider an engine swap. Swapping in a more powerful engine, such as a V8 or a turbocharged inline-six, can provide a significant performance boost. However, engine swaps are complex and expensive projects that require extensive modifications.

In Conclusion: Is the APS Twin Turbo Kit Right for You?

Finding an APS twin turbo kit for sale can be a fantastic way to dramatically increase the power and excitement of your 350Z. However, it's crucial to do your homework, inspect the kit thoroughly, and factor in the cost of installation and tuning. If you're willing to put in the effort, the APS twin turbo kit can transform your Z into a true performance machine.

Good luck with your search, and happy boosting!