Product description
Performance improvement: 10-14 hp, 10-11 ft-lb
*Images show our optional carbon hood.
The GR86 Intake is the result of testing numerous configurations with over 125 dyno runs to arrive at an optimized design. We tested both stock and tuned cars to assess the impact of changing the intake to a less restrictive version. The NA 2.4L Boxer engine is sensitive to intake air temperatures, so our first priority was to ensure a completely sealed system. Dyno testing revealed a dip in power around 6000rpm with the stock ECU. This dip remains regardless of intake configuration - even with all possible restrictions removed, the increased intake flow creates a strong engine resonance at this RPM, causing a momentary dip below the stock curve. The stock airbox has a staggering effect at this RPM, but then also restricts power on the top end. By iterating on our design, testing different intake lengths, single and dual ducts, and even adding baffles, we arrived at a version that minimizes the resonance dip while gaining 14 top end horsepower over the stock ECU. Once the ECU is tuned, we see big gains in the mid-range and the power dip below the stock curve disappears.
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