Performance Gains: 10-14hp, 10-11ft-lb
*Please note: Images display optional carbon engine cover (Sold separately - search EVE-GR86-CF-ENG).
The Eventuri GR86 Intake System represents the pinnacle of performance enhancement, developed through rigorous testing of multiple configurations and over 125 dyno runs to achieve an optimized design. Eventuri tested both stock and tuned versions of the GR86 to evaluate the benefits of a less restrictive intake. Given the NA 2.4L Boxer engine's sensitivity to intake air temperatures, the top priority was ensuring a fully sealed system.
During dyno testing, a dip in power around 6000 RPM on the stock ECU was found, a common issue regardless of intake configuration. This is due to a strong engine resonance at this RPM, which briefly dips power below the stock curve even with a high-flow intake. While the stock airbox mitigates this resonance with a baffling effect, it also restricts top-end power. Through extensive testing of various intake lengths, single and dual duct openings, and even adding baffles, Eventuri developed a design that minimizes this resonance dip while still delivering a 14hp gain at the top end on a stock ECU. Once the ECU is tuned, significant mid-range power gains can be achieved, along with the elimination of the power dip below the stock curve.
The Eventuri Advantage
The GR86 Eventuri Intake System features their patented carbon fibre housing, designed to create an aerodynamically efficient airflow path from the filter to the engine. Unlike typical cone filters with heat shields, this system employs a unique design that invokes the Venturi effect, maintaining laminar flow conditions to reduce drag on the engine and maximize performance.
