Bull Boost Performance J-Pipe for 2015+ Subaru WRX

Upgrade your 2015+ Subaru WRX with the Bull Boost Performance J-Pipe, designed to enhance turbo performance, improve exhaust flow, and maximize power gains. Engineered for precision fitment and durability, this J-Pipe has been dyno-tested to deliver a significant increase in horsepower and torque when paired with custom tuning.

Proven Performance Gains:

• 26.7whp (14.1%) and 19.8wtq (9.0%) increase over stock with tuning.
• Potential gains of 45whp (27%) and 70wtq (41%) on a fully stock vehicle with tuning.

Key Features:

• Innovative Turbo Flange Design – ½-inch thick for durability while retaining all OEM brackets.
• One-Piece Tube Construction – Ensures exact fitment, strength, and ease of installation.
• Optimized 3.5" to 3" Transition – Matches turbine outlet size and reduces smoothly to maintain exhaust velocity.
• Efficient Tube Routing – Maximizes ground clearance while minimizing flow restrictions.
• Custom Stainless Turbo Studs – Replaces weak OEM studs for improved reliability.
• Integrated 3rd O2 Bung – Allows for future use of aftermarket sensors.
• Factory-Style Grounding Strap Mount – Maintains OEM functionality.
• High-Flow Catalytic Converter (Catted Models Only) – Features a 300-cell metallic substrate for reduced restriction without excessive emissions odor.