Introduction
In this installation guide we have provided step by step instructions to setup, remove the OEM exhaust, and install the 27WON Performance Exhaust.
Advisory:
- Working under the vehicle requires a safe and sturdy location for the vehicle to sit on jackstands.
- The exhaust piping will be hot after recent vehicle operation. Allow the vehicle to cool or use a fan to cool the exhaust piping before working on the vehicle.
Tools
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First and foremost; THANK YOU for becoming a part of the 27WON Family. We hope to REDEFINE your experience of the aftermarket with the highest level Parts, Customer Service, Packaging, & Support
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Locate the engine under tray to gain access to the connection between the front-pipe and down stream exhaust
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Use 5mm Allen Key to remove the two (2) bolts shown in green circles
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Use 10mm socket & ratchet to remove the five (5) bolts shown in red circles
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Use a flathead screwdriver to remove the fifteen (15) plastic push-clips. Orange arrows & circles identify push-clips in Step 3
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Yellow square identifies cross-member in Step 6
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The bracket highlighted in yellow is not found on SI models
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Use large flat head screw driver to remove push-clips on each side of undertray
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Use 14mm socket & ratchet to remove the 4 bolts holding the cross member
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This bracket is not found on the SI models
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Locate the connection between the front-pipe and down stream exhaust
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Verify that the exhaust is not to hot to touch, if still hot use a fan to cool the exhaust piping before proceeding
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Use 14mm socket & ratchet to remove three (3) OE nuts in red circles, as shown
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Front-pipe back exhaust has been removed for clarity of image, but doe snot need to be removed to relocate the heat shield out of the way
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Use a 10mm socket and ratchet to remove the six bolts holding the heat shield
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Relocate the heat shield in the direction of the arrow
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With front-pipe back exhaust installed; Set the heat shield on the pipe. You only need to provide clearance around the flange
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With front-pipe back exhaust removed; Remove the heat shield from the vehicle
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Apply a small amount of silicone spray to the end of the hanger rod
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Use the tongue and groove pliers as shown to remove the rubber hanger
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Use a 14mm socket and ratchet to remove the three OE nuts
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It is possible that the stud will thread out of the downpipe flange. This is not an issue, the stud can be threaded back into the flange like a bolt
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Remove the OE front-pipe from the vehicle through the access point directly under the engine
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Locate the provided "house" gasket for front-pipe installation
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Install the provide "house" gasket between the flanges
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Align the studs through the flange then hand tighten the nuts
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Use a 14mm socket & torque wrench to torque each to 30-40 ft-lbs
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Reinstall the OE rubber hanger
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Reinstall the OE heat shield with the bolts hand tight
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Use 10mm socket & toque wrench to torque to 6-8 ft-lbs
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The location of the flat washers, flanges, and split lock washer are critical for proper fastening and vibration resistance.
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17mm M10 Nut
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M10 Split Lock Washer
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M10 Flat Washers
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Exhaust Pipe Flange Location - Between the two flat washers
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17mm M10 Bolt Head
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Locate the provided "tri-bolt" gasket for front-pipe installation
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Locate QTY=3 provided 35mm length assembled M10 bolts
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Locate QTY=3 provided step nuts
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For your assistance in installing the 27WON Front-Pipe, we have laid out the installation with the 27WON Front-Pipe Back Exhaust and OE Front-Pipe Back Exhaust
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Step 16 Show the installation with the 27WON Front-Pipe Back Exhaust
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Step 17 Show the installation with the OE Front-Pipe Back Exhaust
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If you are connecting to the OE front-pipe back exhaust, skip to Step 17
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Install the provide tri-bolt metal gasket
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Using the 35mm length M10 bolts, insert the bolts through the front-pipe flange first
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Install the provided step washers and nuts as shown
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When using the step washer, DO NOT use the flat washer and split lock washer
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It is important that the provided step nuts are used with the 27WON Front-Pipe Back Exhaust to properly align the flanges
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While hand tightening the nuts, verify that the step washers inserting into the flange correctly. Use a 17mm socket & torque wrench to torque the bolts to 30-40 ft-lbs
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If you have already connect your Front-Pipe to the 27WON Exhaust then you can skip this step
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Install the provided metal gasket
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Using the 35mm length M10 bolts, insert the bolts through the front-pipe flange first
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See Step 13 for hardware setup
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Install the remaining washers and nuts. Use a 17mm socket & torque wrench to torque the bolts to 30-40 ft-lbs
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Start the vehicle to check for leaks or rattles. If none, then take a spin around the block for further verification. If you do find a leak or rattle, please inspect the exhaust further
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A leak could be caused by a loose flange bolt, improperly used gasket, or if debris is stuck between the gasket and flange
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A rattle could be caused by misaligned pipe or a rubber hanger being orientated incorrectly
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If you have exhausted all investigation then give us a call and we would be happy to help and resolve the issue with you
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Re-install the 10mm bolts with a 10mm socket & torque wrench. Torque to 8-12 ft-lbs
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Re-install the 5mm socket flange bolts with the 5mm Allen key & torque wrench. Torque to 6-8 ft-lbs
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Re-install the push clips at the bottom of the undertray and the sides (shown in Step 20)
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Re-install the push clips at the side of the undertray
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Re-install the cross member. Use a 14mm socket & torque wrench to torque the bolts to 25-35 ft-lbs
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The bracket highlighted in yellow is not found on SI models
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This completes the installation of your 27WON Performance Exhaust
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We hope you were impressed with your 27WON experience and love your new exhaust for years to come. Email us at sales@27won.com or call us at 571-271-0271 with any questions or concerns
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