Forced Performance Subaru STi/WRX Green UHF BB Turbo 84mm Black Housing Int WG w/Oil Line (D/S Only)

If you're looking to significantly upgrade the performance of your Subaru WRX or STi, a larger, more efficient turbocharger is often the key. This Forced Performance Green UHF BB turbocharger is built to handle higher boost levels and improve airflow over the stock unit, making it a popular choice for enthusiasts seeking more power. The 'UHF' designation means it's designed for Ultra High Flow, and the 'BB' signifies it uses ball bearings for quicker spool-up and improved durability compared to journal bearing turbos.

This turbo features an 84mm compressor wheel and a black housing, giving it a distinct look. The integrated wastegate (Int WG) simplifies installation by combining the wastegate actuator with the turbo housing. It also comes with the necessary oil line, which is crucial for proper lubrication and cooling of the turbo's rotating assembly. The ball bearing center cartridge is a notable upgrade, reducing friction and allowing the turbo to reach boost pressure faster, especially at lower RPMs. This can lead to a more responsive engine feel and a broader power band.

Keep in mind that this turbocharger is not CARB approved and cannot be shipped to California. Proper tuning is essential when installing a larger turbocharger to ensure optimal performance and engine longevity. You'll also want to ensure your supporting systems, like fuel delivery and exhaust, are up to the task of handling the increased airflow and power output.