The Subaru WRX and STI are some of the most loved performance machines and with good reason. They feature speed-sensing steering, fuel economy, and track-tuned suspension. Even with this, it makes sense to fine-tune your Subaru to match your preferences, with the engine being the go-to for any modifications. So, what are some things to keep in mind for your next WRX STI modification?
Get an Engine Remap
If you own an STI, your horsepower likely totals 310 lb-ft and a torque of 290. The WRX, on the other hand, comes with 258 lb-ft of torque and a 2.0-liter turbocharged engine that translates to 268 horsepower. Modifying these features means getting an engine remap for even more power output. A stage 1 remap could help with this, optimizing your car for more power.
Fine Tune Your Engine With STI Intakes
Getting an STI intake will be ideal if you need a complete overhaul of your horsepower and torque. These intakes provide seamless airflow in your engine. While it may seem like a hectic part of your engine modification, it comes with an easy-to-install cone filter and adapter that works perfectly with the Subaru engine. WRX intakes also provide the same benefits, making it possible to customize different models of your Subaru.
Get a Free Flow Exhaust System
More power means more gasses exiting your Subaru’s exhaust, calling for unrestricted airflow. While your current exhaust may have worked well with your former engine, consider creating more room for your downpipes. Getting an exhaust system fitted with your new modifications will be the trick to minimizing back pressure resistance.
Unrestricted exhaust flow means that gasses flow easily between the downpipes and the muffler, allowing faster combustion cycles. The result is improved power, eliminating unsuccessful starts on your drives. Systems such as the Subaru exhaust are an excellent addition to your engine modification and come with customizable gas control and sound frequency features.
Upgrade Your Bypass Valve
Increasing the boost on your turbocharged engines will also be helpful during an engine modification. To do this, ensure that you upgrade the bypass valve. Failure to increase this pressure could leave you with a leak, resulting in inefficient power. Since engine remaps often create a significant boost over the factory-determined rate, an upgraded valve will be essential for boosting the air intake suited to the new specifications.
Aftermarket valves will be ideal for this tune-up, as these often come with increased turbo flutter. Take note that bypass valve upgrades will depend on the usage of your car. Consider a blow-off valve upgrade if your upgrade is essential to keep up with racing requirements. This will help in releasing air from the vehicle.
Alternatively, if your modifications are for commutes to work or other daily errands, a bypass upgrade will be suitable, as this helps move the stock valve from a high-pressure to a low-pressure zone. This change will help your vehicle meet the required power limits for efficient airflow.
Why JDMuscle
We work with the best aftermarket companies to provide the best products at affordable prices. Our products are made with premium components, whether high-quality stainless steel or carbon fiber blends, providing guaranteed long-term service. If you need help purchasing tailor-made accessories or easy-to-install products, JDMuscle has you covered. Contact us today for more details about our product catalogs.