Eventuri Carbon Intake System Toyota GR86 2021+ Gloss

The GR86 intake is the result of extensive testing, including over 125 dyno runs, to achieve an optimized design. We tested both stock and tuned vehicles to determine the effects 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 ensuring a completely sealed system. During dyno testing, we found that the stock ECU's power dip dropped around 6,000 rpm. This drop persists regardless of the intake configuration—even with all possible restrictions removed, a higher-flow intake creates severe engine resonance at this rpm, causing a momentary dip below the stock curve. The stock airbox has a distracting effect at this rpm but also limits top-end power. By iterating our design by testing different intake lengths, single and dual port openings, and even adding baffles, we arrived at a version that minimizes resonance drop while gaining 14 hp at the top end of the stock ECU. Once the ECU is tuned, we can see significant mid-range power gains and an elimination of the power drop below the stock curve.