1. Guest, see the CivicX Forum Rules and User Agreement before posting.  After reading click here to dismiss this notice →
    Dismiss Notice

Featured DIY rear bumper fake vent conversion

Discussion in 'Civic Si Forum (10th Gen)' started by Brian17Si, Aug 12, 2017.




  1. Brian17Si

    Brian17Si Member

    Rank:
    Joined:
    Jul 23, 2017
    Posts:
    31
    Featured Threads:
    1
    Thanked:
    78
    Location:
    Hartford CT
    First Name:
    Brian
    Car(s):
    2017 Honda Civic Si
    :wave:Check below for final pics...

    9B0DA644-691C-4DE1-8498-ECE24EECD921-7095-00000548D67617D8.jpeg


    DIY Rear Vent Conversion

    This was midway point
    I'm in the process of converting the rear vents to active vents. These are the original vent garnishes and conversion is custom done by me. Next is to hand off to body shop to remove bumper, cut holes and respray. This part could also be done be me.

    To cut or not to cut?
    I'm going to cut entire vent area or just thinner vertical slanted area (see in picture below)

    20170810_150355-blur.jpg

    20170810_150411-blur.jpg

    20170810_163601-blur.jpg

    20170810_163541-blur.jpg



    Final finished pics:

    pic1-jpg.jpg

    pic2-jpg.jpg

    pic3-jpg.jpg

    pic4-jpg.jpg

    pic5-jpg.jpg
     
    Last edited: Sep 18, 2017
    00fk7, Meat Hammer, jusmytyp.r and 8 others thanked this.
  2. zroger73

    zroger73 Senior Member

    Rank:
    Joined:
    Apr 15, 2017
    Posts:
    1,636
    Featured Threads:
    3
    Thanked:
    3,142
    Location:
    United States
    Car(s):
    2017 Honda Ridgeline RTL-E, 2017 Civic Si sedan
    What are you attempting to gain by doing this modification?
     
    Nismo14, Trey and grumpyguy6 thanked this.
  3. coopermidnight

    coopermidnight Senior Member

    Rank:
    Joined:
    Jul 17, 2016
    Posts:
    351
    Thanked:
    428
    Occupation:
    Software developer
    Location:
    Florida
    First Name:
    Brandon
    Car(s):
    17 Si sedan
    Garage Profiles:
    1
    I'd prefer a bumper swap with the regular sedan, but I'm interested to see how this turns out!
     
    Slickone, Leetcivx, Brian17Si and 2 others thanked this.
  4. T_A_H

    T_A_H Senior Member

    Rank:
    Joined:
    Jul 29, 2017
    Posts:
    255
    Thanked:
    222
    Location:
    Elk Grove, CA
    First Name:
    Brad
    Car(s):
    2017 Civic Si Sedan 2012 Honda Accord LX-P
    This.

    Every time I see a regular Civic LX I wish they just left the Si body style alone and just added a side skirt and spoiler
     
    CivicsClass, Slickone and Leetcivx thanked this.
  5. DoodleDave Senior Member

    Rank:
    Joined:
    Jul 8, 2017
    Posts:
    85
    Thanked:
    42
    Location:
    Eastern NC
    First Name:
    Austin
    Car(s):
    2017 Honda Civic Si
    I really want to swap with a normal Civic. I have already asked in my regional area forum. I really thought someone with a basic Civic would like a sportier looking front bumper but I guess not. I think I will hold out until Mugen makes parts for the car. If they have a body kit with a more appealing front bumper than I will do that. If not I will buy a new bumper.
     
  6. invader

    invader Senior Member

    Rank:
    Joined:
    Nov 20, 2015
    Posts:
    314
    Thanked:
    160
    Location:
    North-Eastern Ontario Canada
    Car(s):
    2004 Corolla CE manual
    That looks better already. :thumbsup: Opening up such huge rear bumper vents should yield a good improvement in highway fuel efficiency, as well as quicker 1/4 mile time and trap speed.
     
    Meat Hammer, Brian17Si and Design thanked this.
  7. zroger73

    zroger73 Senior Member

    Rank:
    Joined:
    Apr 15, 2017
    Posts:
    1,636
    Featured Threads:
    3
    Thanked:
    3,142
    Location:
    United States
    Car(s):
    2017 Honda Ridgeline RTL-E, 2017 Civic Si sedan
    Do you have actual test data to support that? Opening up those spaces would save weight and material. If it would improve fuel efficiency or performance even by the tiniest imaginable amount, don't you think Honda would have done that from the factory? I can't think of anything better for a manufacturer than saving weight, material, and money while gaining performance and fuel efficiency at the same time!

    In a worst-case scenario, allowing air to flow through areas not intended could actually create additional drag and decrease efficiency and performance. It may also alter the airflow characteristics in such a way that causes exhaust fumes to be drawn into the vehicle. We'd need a wind tunnel and several hundred thousand dollars worth of test equipment and fluid modeling software to validate these wild guesses.
     
    fk8_#798, Kinetis, Nismo14 and 11 others thanked this.
  8. 360glitch

    360glitch Moderator Moderator

    Rank:
    Joined:
    Feb 15, 2017
    Posts:
    1,609
    Featured Threads:
    2
    Thanked:
    1,295
    Location:
    MS
    First Name:
    Corey
    Car(s):
    2017 Civic Hatchback Sport 6MT
    Garage Profiles:
    1
    I too expect this may be the case.
     
    Design, cmwalton16 and grumpyguy6 thanked this.
  9. HayaiKuruma

    HayaiKuruma Senior Member

    Rank:
    Joined:
    May 6, 2017
    Posts:
    202
    Thanked:
    96
    Location:
    Fairfax, VA
    Car(s):
    Hatchback EX
    Its Monday, so I'm a little slow. But are the pics above of the actual conversion or are they just photoshoped images?

    PS, I think it looks good. Might have to do some black paint mitigation behind the vents but thats no big deal.
     
    Last edited: Aug 14, 2017
    The_Fenix_2.0 thanked this.
  10. Boomba Racing

    Boomba Racing Civic X Vendor Elite Sponsor

    Rank:
    Joined:
    Nov 30, 2016
    Posts:
    399
    Featured Threads:
    1
    Thanked:
    314
    Location:
    Wood Dale, IL
    Home Page:
    Car(s):
    2017 Civic Sport
    Props to you for being the first one on trying to tackle this task!
     
    Meat Hammer, The_Fenix_2.0 and Brian17Si thanked this.
  11. Design Senior Member

    Rank:
    Joined:
    Sep 28, 2015
    Posts:
    2,098
    Featured Threads:
    1
    Thanked:
    1,689
    Location:
    Southern California
    Car(s):
    09 MS3, 17 ABM Si Sedan
    Well played, sir. :popcorn:
     
    Trey, jbrandona119, DmhCmh and 4 others thanked this.
  12. kritz

    kritz Senior Member

    Rank:
    Joined:
    Jan 7, 2017
    Posts:
    578
    Thanked:
    682
    Location:
    Ohio
    Car(s):
    2017 SI sedan.
    Looks a lot better IMO!
     
    The_Fenix_2.0 and Brian17Si thanked this.
  13. Shankmeyster

    Shankmeyster Senior Member

    Rank:
    Joined:
    Mar 15, 2017
    Posts:
    1,612
    Thanked:
    800
    Location:
    AZ
    Car(s):
    2017 Civic Sport Hatch 6MT
    Garage Profiles:
    1
    The funny thing is you are the first one to realize that was a troll attempt. Anyway, I would rather just have a vent delete rear bumper option. Front ones are fine but the rears are kind of pointless.
     
    The_Fenix_2.0 thanked this.
  14. jakabony

    jakabony Senior Member

    Rank:
    Joined:
    Jul 20, 2017
    Posts:
    269
    Thanked:
    261
    Occupation:
    Field Technology Service Manager
    Location:
    Pittsburgh PA
    First Name:
    Jake
    Car(s):
    2017 Honda Civic Si, 2017 Subaru Forester, 1996 Honda Accord LX
    Garage Profiles:
    1
    You would prob gain more functionality by opening up the front "vents", instead of the rear ones.
     
    hfpdohc thanked this.
  15. invader

    invader Senior Member

    Rank:
    Joined:
    Nov 20, 2015
    Posts:
    314
    Thanked:
    160
    Location:
    North-Eastern Ontario Canada
    Car(s):
    2004 Corolla CE manual
    No. Front vents are better left shut for reduced drag. That's why we see active front shutters on some models which close at higher speeds to improve fuel efficiency.

    Venting out the rear bumper cover helps by reducing drag, which is why it's of common practice in drag racing... Weight savings are of course negligible.

    It already looks better because the rear vents are no longer fake. It does also look lighter. It will look great once it's finished and opened up behind.
     
    Last edited: Aug 14, 2017
    Meat Hammer, HBK and Brian17Si thanked this.
Loading...

Share This Page