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1.02

Minor Versionm

by Rich Harris

Introduction

In this installation guide we have provided step by step instructions to 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.
  1. 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
    • 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

    • These instructions were written with a 2022 Civic EX Sedan

  2. Jack up your 11th Generation Civic and place your jack stands in the appropriate mounting spots
    • Jack up your 11th Generation Civic and place your jack stands in the appropriate mounting spots

    • You can find this in your owners manual

    • Make sure you have supported your car properly. If done improperly, this could lead to serious injury

  3. The following instructions are shown with no bubble wrap or cardboard for clarity of the installation process
    • The following instructions are shown with no bubble wrap or cardboard for clarity of the installation process

    • We recommend leaving as much protective bubble wrap/cardboard on the exhaust as possible during install to protect against scratches and dings during the process

    • Cut holes in the bubble wrap to expose the flanges, hanger rods, and fastening locations

  4. The 27WON packaging is not only designed to get your performance parts to your doorstep safely, but to also provide you with an awesome garage banner and/or comfy cardboard mat to lay on under your car for installation
    • The 27WON packaging is not only designed to get your performance parts to your doorstep safely, but to also provide you with an awesome garage banner and/or comfy cardboard mat to lay on under your car for installation

    • You can cut out the banner as shown with the orange square

    • Or you can use the entire unfolded box as a mat to lay under your vehicle

    • Remove the staples from the box as they don't feel great on your backside...

  5. This exhaust can be purchased in three varieties. Front pipe back, with Front pipe, and as a turbo back system which includes the front pipe and the downpipe
    • This exhaust can be purchased in three varieties. Front pipe back, with Front pipe, and as a turbo back system which includes the front pipe and the downpipe

    • Front pipe

    • Downpipe

    • This guide describes the process for exhaust installation only. Front Pipe & Downpipe instructions are separate

  6. If you purchased your exhaust with the turbo back option then now is a great time to proceed with installation of the downpipe
    • If you purchased your exhaust with the turbo back option then now is a great time to proceed with installation of the downpipe

    • There is some overlap with these instructions, particularly around removal of the skid tray

    • We think the easiest path is to come back to these instructions at step 19 of the downpipe instructions and resume at step 10 of these instructions

    • L15-6-209-15 11th Gen Downpipe install instructions

  7. These instructions include the optional 27WON front pipe
    • These instructions include the optional 27WON front pipe

  8. Locate the Skidtray We recommend using a prying tool like the one shown by the green square Use a flathead screwdriver or a prying tool to remove the fourteen (14) plastic push-clips circled in orange. Orange arrows identify the eight (8) additional push-clips described in the next step that are removed last
    • Locate the Skidtray

    • We recommend using a prying tool like the one shown by the green square

    • Use a flathead screwdriver or a prying tool to remove the fourteen (14) plastic push-clips circled in orange. Orange arrows identify the eight (8) additional push-clips described in the next step that are removed last

    • Use a #2 Philips head screw driver to remove the two (2) Philips pan head screws shown in red circles

    • Use a 10mm socket & rachet to remove the two (2) short head shoulder bolts shown in dark blue circles

    • Use a 10mm socket & ratchet to remove the four (4) tall head shoulder bolts shown in light blue circles

  9. Use a large flat head screw driver or prying tool to remove the four (4) push-clips from each front wheel well Use a large flat head screw driver or prying tool to remove the four (4) push-clips from each front wheel well
    • Use a large flat head screw driver or prying tool to remove the four (4) push-clips from each front wheel well

  10. Remove (4) 14mm bolts shown for easier access to flanges Support where the exhaust meets the front pipe with a bungee cord
    • Remove (4) 14mm bolts shown for easier access to flanges

    • Support where the exhaust meets the front pipe with a bungee cord

    • Using a 14mm socket, remove the (3) bolts shown

  11. We'll show each hanger in the next steps. Hangers can be very difficult to get off. Here are a few ways to approach this Spray hanger as shown with lubricant. We like glass cleaner Using your Tongue & Groove Pliers,  pry the rubber bushing from the metal hanger
    • We'll show each hanger in the next steps. Hangers can be very difficult to get off. Here are a few ways to approach this

    • Spray hanger as shown with lubricant. We like glass cleaner

    • Using your Tongue & Groove Pliers, pry the rubber bushing from the metal hanger

    • Or, the easiest way is to use exhaust pliers. You can get these on Amazon for around $20

  12. Using a spray cleaner, lubricate the front hangers and rubber support Use tongue & groove pliers to press the rod out of the rubber hanger. Remove the hangers of the exhaust from the rubber supports as shown
    • Using a spray cleaner, lubricate the front hangers and rubber support

    • Use tongue & groove pliers to press the rod out of the rubber hanger. Remove the hangers of the exhaust from the rubber supports as shown

  13. Shown is the passenger side rear hanger, repeat this for the driver side Using a spray cleaner, lubricate the rear hangers and rubber supports
    • Shown is the passenger side rear hanger, repeat this for the driver side

    • Using a spray cleaner, lubricate the rear hangers and rubber supports

    • Use tongue & groove pliers to press the rods out of the rubber hanger, then remove the hangers off the exhaust from the supports as shown

  14. Using a transmission jack, floor jack, or a friend support the OE exhaust in the marked area
    • Using a transmission jack, floor jack, or a friend support the OE exhaust in the marked area

  15. Using a spray cleaner, lubricate the remaining rear hangers and rubber supports Use tongue & groove pliers to press the rod out of the rubber hanger then remove the hangers off the exhaust from the rubber supports as shown
    • Using a spray cleaner, lubricate the remaining rear hangers and rubber supports

    • Use tongue & groove pliers to press the rod out of the rubber hanger then remove the hangers off the exhaust from the rubber supports as shown

    • If the exhaust is unsupported, it will fall and possibly become damaged. If not done yet, make sure you support the OE exhaust

  16. With the exhaust unbolted and removed from the hanger supports, remove from the car and set aside
    • With the exhaust unbolted and removed from the hanger supports, remove from the car and set aside

    • If you did not buy the exhaust with a Front pipe, skip to step 24 now

  17. Locate the front pipe support
    • Locate the front pipe support

    • Using a 12mm socket, remove the (2) bolts holding the front pipe support

  18. Shown is the 27WON Downpipe. Your OE Downpipe will look slightly different
    • Shown is the 27WON Downpipe. Your OE Downpipe will look slightly different

    • If you have the 27WON Downpipe installed, use a 15mm socket to remove the (3) nuts holding the front-pipe to the downpipe

    • If you have the OE Downpipe installed, use a 14mm socket to remove the (3) nuts holding the front pipe to the down pipe

  19. With the front pipe unbolted, remove the front pipe from the car and set aside
    • With the front pipe unbolted, remove the front pipe from the car and set aside

  20. Using a spray cleaner, lubricate the front pipe hanger and remove it from the OE front pipe using pliers or a hanger removal tool Reinstall the hanger on the 27WON front pipe
    • Using a spray cleaner, lubricate the front pipe hanger and remove it from the OE front pipe using pliers or a hanger removal tool

    • Reinstall the hanger on the 27WON front pipe

  21. Guide the 27WON front pipe into the car
    • Guide the 27WON front pipe into the car

    • Guide the front pipe support studs back into their location

  22. Shown is the 27WON Downpipe. Your OE Downpipe will look slightly different
    • Shown is the 27WON Downpipe. Your OE Downpipe will look slightly different

    • If you have the 27WON Downpipe installed, use a 15mm socket to reinstall the (3) nuts that hold the front pipe to the downpipe

    • If you have the OE Downpipe installed, use a 14mm socket to reinstall the (3) nuts that hold the front pipe to the down pipe

  23. Using a 12mm socket, reinstall the (2) bolts to secure the front pipe support to the chassis
    • Using a 12mm socket, reinstall the (2) bolts to secure the front pipe support to the chassis

  24. Using a spray cleaner, lubricate the front  hanger and rubber support as shown Use tongue & groove pliers to press the rod out of the rubber hanger, remove the rubber support off the OE exhaust hangers as shown Reinstall the rubber support on the 27WON forward mid-pipe hangers
    • Using a spray cleaner, lubricate the front hanger and rubber support as shown

    • Use tongue & groove pliers to press the rod out of the rubber hanger, remove the rubber support off the OE exhaust hangers as shown

    • Reinstall the rubber support on the 27WON forward mid-pipe hangers

  25. This step could be done on the car. For reference, it is shown off the car here. The install process will look different from what we describe here if done on the car
    • This step could be done on the car. For reference, it is shown off the car here. The install process will look different from what we describe here if done on the car

    • Align the two mid-pipes as shown. Their orientation is critical for proper exhaust fitment

    • Use the hangers for reference

  26. Insert a provided "tri-bolt"gasket between the two flanges of the mid-pipes Align the flanges as shown Perfect alignment of the flanges here is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car
    • Insert a provided "tri-bolt"gasket between the two flanges of the mid-pipes

    • Align the flanges as shown

    • Perfect alignment of the flanges here is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car

  27. Make sure the exhaust flanges go where the green arrow is indicating when installing your hardware in all flanges in your 27WON exhaust system Install 3 sets of hardware as shown  using a 17mm socket and 17mm wrench. Hand tighten the hardware for now
    • Make sure the exhaust flanges go where the green arrow is indicating when installing your hardware in all flanges in your 27WON exhaust system

    • Install 3 sets of hardware as shown using a 17mm socket and 17mm wrench. Hand tighten the hardware for now

  28. Using the same location as before, support the back of your 27WON exhaust with a friend or jack Support the front section with a bungee cord
    • Using the same location as before, support the back of your 27WON exhaust with a friend or jack

    • Support the front section with a bungee cord

    • Reinstall brace later

  29. Using a spray cleaner, lubricate the rubber hanger
    • Using a spray cleaner, lubricate the rubber hanger

    • Reinsert the front hanger to the chassis hanger as shown

  30. Using a spray cleaner, lubricate the hanger support Reconnect the rubber hanger to the exhaust hanger
    • Using a spray cleaner, lubricate the hanger support

    • Reconnect the rubber hanger to the exhaust hanger

    • Repeat this step for the other hanger on the rear mid-pipe

  31. Skip to step 33 if you did not buy the optional front pipe Locate a provided "tri-bolt" gasket for front-pipe installation Locate QTY=3 provided 35mm length assembled M10 bolts
    • Skip to step 33 if you did not buy the optional front pipe

    • Locate a provided "tri-bolt" gasket for front-pipe installation

    • Locate QTY=3 provided 35mm length assembled M10 bolts

    • Locate QTY=3 provided step bushings

  32. Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car Place a provided "tri-bolt" gasket between the flanges
    • Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car

    • Place a provided "tri-bolt" gasket between the flanges

    • Using the 35mm length M10 bolts, insert the bolts through the front-pipe flange first

    • Install the provided step washers as shown

    • When using the step bushings, DO NOT use the flat washer and split lock washer with the bolts

    • It is important that the provided step bushings are used with the 27WON Front-Pipe Back Exhaust to properly align the flanges

    • While hand tightening the nuts, verify that the step washers are properly inserted into the flange

    • Reconnect (4) bolts shown to secure bracket

  33. If you purchased a 27WON front pipe then skip to step 35 Locate QTY=3 provided step nuts Locate QTY=1 provided tri-bolt gaskets
    • If you purchased a 27WON front pipe then skip to step 35

    • Locate QTY=3 provided step nuts

    • Locate QTY=1 provided tri-bolt gaskets

    • Locate QTY=3 provided 35mm length M10 bolts

  34. Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car Install the provided "tri-bolt" gasket onto the OE front-pipe
    • Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car

    • Install the provided "tri-bolt" gasket onto the OE front-pipe

    • Align the studs through the flange then hand tighten the step nuts

    • Reinstall (4) bolts as shown to secure bracket

  35. Use caution not to damage exhaust tips Using a spray cleaner, lubricate the hanger support for the muffler section
    • Use caution not to damage exhaust tips

    • Using a spray cleaner, lubricate the hanger support for the muffler section

    • Reconnect the rubber hanger to the exhaust hanger as shown

    • It's ok to allow the muffler section to hang on the rubber support while you quickly get the hardware for the flanges

    • Repeat this step for the other side

  36. In one go, insert a provided "tri-bolt" gasket between the rear mid-pipe flange and the muffler flange then insert a bolt and washer to hold the sections together Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car
    • In one go, insert a provided "tri-bolt" gasket between the rear mid-pipe flange and the muffler flange then insert a bolt and washer to hold the sections together

    • Perfect alignment of the flanges is critical. Even 1mm of misalignment can cause a big fitment issue at the rear of the car

    • Align the gasket and flange properly and insert the other two (2) bolts

    • Using the same hardware stack up as before, install the washer, split washer, and nut for each bolt

    • Hand tighten the (3) nuts

    • Repeat this step on the other side

  37. Stand back several feet from the car and inspect the exhaust If the tips are sitting high, there may be a rubber hanger that is upside-down. Verify that all hangers are oriented correctly
    • Stand back several feet from the car and inspect the exhaust

    • If the tips are sitting high, there may be a rubber hanger that is upside-down. Verify that all hangers are oriented correctly

    • If the tips are not centered, starting from the rear section, loosen the flange bolts and nut hardware moving down the system and re-align the flanges as needed

    • It can be tricky to get all the flanges just so. A very small fitment difference at the front pipe can make a big difference to how the mufflers hang

    • Once tips are centered, torque down all hardware to 25~30 ft lbs

    • Check again that exhaust tips are positioned properly

  38. Reinsert the (4) push pins into the mounting spots as shown Repeat this step on the other side
    • Reinsert the (4) push pins into the mounting spots as shown

    • Repeat this step on the other side

  39. Reinstall the fourteen (14) plastic push-clips circled in orange Using a Philips head screw driver, reinstall the two (2) Philips pan head screws shown in red circles
    • Reinstall the fourteen (14) plastic push-clips circled in orange

    • Using a Philips head screw driver, reinstall the two (2) Philips pan head screws shown in red circles

    • Using a 10mm socket and ratchet, reinstall the two (2) short head shoulder bolts shown in dark blue circles

    • Using a 10mm socket & ratchet reinstall the four (4) tall head shoulder bolts shown in light blue circles

  40. 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
    • 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

    • A leak could be caused by a loose flange bolt, improperly used gasket, or if debris is stuck between the gasket and flange

    • A rattle could be caused by misaligned pipe or a rubber hanger being orientated incorrectly

    • If you have "exhausted" all options, then give us a call and we would be happy to help resolve any issues

  41. Exhaust may smoke for the first 30 minutes or so of use. This is normal
    • Exhaust may smoke for the first 30 minutes or so of use. This is normal

    • Exhaust sound will settle a bit during the first 100 miles of use. This is normal

    • Your Honda has a cold start system which causes louder exhaust for around 15 seconds when you first start your car

  42. This completes the installation of your 27WON Performance Exhaust
    • This completes the installation of your 27WON Performance Exhaust

    • We hope you were impressed with your 27WON experience and love your new exhaust system for years to come. Email us at sales@27won.com or call us at 571-271-0271 with any questions or concerns

    • Please leave a review here: https://store.27won.com/11thgen-civic-se...

    • Stay Connected with the latest developments with the 27WON Monthly Newsletter: https://store.27won.com/27won-newsletter...

    • See the latest Products and Tech Videos from 27WON with a quick Subscribe: https://www.youtube.com/27won

    • Share your experience using #27WON on Instagram and Facebook

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Josh Rivas

Member since: 02/02/2022

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