Introduction
In this installation guide we have provided step-by-step instructions to remove and replace the 27WON Air Filter for 27WON Intake System.
Parts
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First and foremost; THANK YOU for being a part of the 27WON Family. We hope to REDEFINE your experience of the aftermarket well beyond your first purchase of a new part
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The following instructions were written on 2018 Civic Si for all 10th gen turbo Civic's with the 1.5L and 27WON CAI system already installed
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Open the hood and locate your airbox and airbox lid
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Using the 3mm Allen tool remove the 4x screws securing the lid to the airbox
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Remove the lid and set aside with the 4x screws for reinstall later
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Using the 10mm socket and ratchet loosen the 10mm lock nut on the t-bolt clamp
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Pull filter forward off of velocity stack and lift up and out of airbox
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Now is a great time to clean your air box. Simply use a microfiber towel to wipe down the inside of you airbox to remove any dust
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The next step explains how to reinstall your air filter.
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When re-installing your air filter be careful not to deform the air box to a point of deformation by over-tightening the clamp. Doing so can cause the air box to crack and the air filter to fall off
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Swap the clamp over from the old filter to the new filter
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Install filter with clamp into the airbox and over the velocity stack
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Verify the filter is fully over the velocity stack all the way around
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Filter can fall off is this is not done correctly
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Orient clamp with nut as shown. Tighten the t-bolt clamp down
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Reinstall the airbox lid and secure it with the 4x screws removed earlier. Torque the 4x screws to snug
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"Torque to snug" is defined as 1/4 to 1/2 more rotation after setting resistance is felt
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This completes the replacement of your 27WON Air Filter
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If you would like to see how to clean your filter so you have a fresh filter to swap in next time check out this video - https://youtu.be/nE7diTeI4Gw
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