Tomei Expreme Equal Length Exhaust Manifold GT86 & BRZTomei Expreme Equal Length Exhaust Manifold for the Toyota GT86 & Subaru BRZ Equal length 4 2 1 design for peak power Optimised pipe lengths and angles Improved flow and efficiency through cat less design Designed for minimum heat transfer to oil pan O2 Sensor ports Weight 6. 45kg (Standard manifold is 9. 2kg) Fensport Tip: Ecu will require tuning, we recommend our GT86 & BRZ NA Remap for maximum power gains. Note: No catalytic converter, this product