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  • AEM Cold Air Intake System | 2008-2015 Mitsubishi Evo X (21-678C) - Modern Automotive Performance
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  • AEM Cold Air Intake System | 2008-2015 Mitsubishi Evo X (21-678C) - Modern Automotive Performance
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  • AEM Cold Air Intake System | 2008-2015 Mitsubishi Evo X (21-678C) - Modern Automotive Performance
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  • AEM Cold Air Intake System | 2008-2016 Mitsubishi Evo X (21-678C)

    MAP price match guarantee Unbeatable Price Guarantee
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    AEM Induction Systems

    AEM Cold Air Intake System | 2008-2016 Mitsubishi Evo X

    PART# AEM 21-678C
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 314.99   $ 463.99
    Cyber Week Savings 32% ($ 149.00)

    Built To Order Free delivery by , to your door when ordered within hrs and mins
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    Evo X CAI System

    A cold air intake system relocates the filter outside of the engine compartment to deliver cool air inlet temperatures. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horsepower and torque. But that's only part of the power equation. Every AEM cold air induction system features high standards of construction and we are so confident in their fit and performance that we guarantee them for the life of your vehicle.

    Tuning the inlet pipe in length and diameter to match the engine's resonance helps move more air to the cylinders (think of your engine as a big air pump), and this tuning allows us to deliver large power gains. We also monitor fuel trim correction factors and all OBDII sensors during product development to eliminate leaning the engine out and/or throwing a check engine light.

    Features

    • Non-Woven Synthetic Air Filter
    • Gunmetal Gray Finish
    • Steel Connector Clamps

    Benefits

    • Increased horsepower
    • Tuned and dyno-tested to improve acceleration and engine sound
    • Low restriction aluminum tubing
    • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
    • Washable and reusable oil-free filter media

    Applications

    • 2008-2016 Mitsubishi Evo X

    What's in the Box?

    • 1 Cold Air Intake System
    • 5 Steel Clamps

    Warranty

    • AEM Limited Lifetime Warranty

    Evo X CAI System

    A cold air intake system relocates the filter outside of the engine compartment to deliver cool air inlet temperatures. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horsepower and torque. But that's only part of the power equation. Every AEM cold air induction system features high standards of construction and we are so confident in their fit and performance that we guarantee them for the life of your vehicle.

    Tuning the inlet pipe in length and diameter to match the engine's resonance helps move more air to the cylinders (think of your engine as a big air pump), and this tuning allows us to deliver large power gains. We also monitor fuel trim correction factors and all OBDII sensors during product development to eliminate leaning the engine out and/or throwing a check engine light.

    Features

    • Non-Woven Synthetic Air Filter
    • Gunmetal Gray Finish
    • Steel Connector Clamps

    Benefits

    • Increased horsepower
    • Tuned and dyno-tested to improve acceleration and engine sound
    • Low restriction aluminum tubing
    • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
    • Washable and reusable oil-free filter media

    Applications

    • 2008-2016 Mitsubishi Evo X

    What's in the Box?

    • 1 Cold Air Intake System
    • 5 Steel Clamps

    Warranty

    • AEM Limited Lifetime Warranty

    Customer Reviews

    Based on 17 reviews
    82%
    (14)
    0%
    (0)
    12%
    (2)
    6%
    (1)
    0%
    (0)
    s
    s.g.
    Clean look

    AEM has been around for a long time and it’s because they produce a great product, easy directions and clean look under the hood

    S
    S.H.
    Looks better than it fits

    Had a frustrating time getting this to fit, but it fits. Where the MAF pipe enters the box is a stupid design, it should be air tight. The provided weather trim with metal tabs is cumbersome and it should have been redesigned so it's a solid connection, not just floating.

    The BOV location moves higher and to the drivers side where the power box sits.

    I had to buy some vacuum line because the stock couldn't reach from the BOV to the intake manifold.

    Using AP Tuner I compared the COBB provided AEM CAI MAP and MAF tables for 2011-2014 to COBB's Stage 1+ SF tables and the MAP high/low tables are identical but the COBB S1+ SF MAF looks totally wrong.

    I tried it anyway and the car would not run, just kept stalling out. Something's up there, but I only changed the MAP and MAF tables.

    I stuck with using a previous AMSSTX300 tune that was based on a COBB HFF and it works well enough to be safe for redline pulls; definitely leaner but not knock or code inducing...just way better gas mileage.

    If I could have a do-over I would have picked an AMS CAI with heatshield but I can make this work with a dyno tune.

    A
    A.M.
    AEM intake

    Great product from a super reliable source. I buy all my parts from MAPERFORMANCE.COM for my 2015 GSR EVO X including all my fluids. This intake delivers great sound; it utilizes the stock intakes housing which I believe has the best results for the vehicle. Quality and fitment great as I was able to install this intake in less than 90 minutes. It comes with complete set of directions and two AEM stickers.

    J
    J.Y.
    That boost

    Just installed it and my car feels faster. It like a whole different car.

    B
    B.F.
    Not worth the price.

    Ok product but you're only paying for the brand here. Would have bought a different product if I would have known it wasnt really worth it.

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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