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The AEM Scion Cold Air intake system relocates the filter outside of the engine compartment to deliver the coolest air inlet temperatures possible. Tuning the Scion inlet pipe length and diameter to match the Scion's engine's resonance helps move more air to the cylinders and this tuning allows AEM to deliver the maximum power gains throughout the entire RPM range. AEM also monitors Scion fuel trim correction factors and all OBDII sensors during R&D to eliminate leaning the engine out and/or throwing a check engine light.
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