How to: Air Box Silencer Delete
+ Reply to Thread
Page 1 of 8 12345678 LastLast
Results 1 to 15 of 109

This is a discussion on How to: Air Box Silencer Delete within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Ok, i have seen alot of questions regarding this free mod, so i thought i would post a how to ...

  1. #1
    Registered User J.Skellington's Avatar
    Join Date
    Nov 2006
    Location
    Lake elsinore,CA
    Posts
    177

    How to: Air Box Silencer Delete

    Ok, i have seen alot of questions regarding this free mod, so i thought i would post a how to on the matter: This procedure is being done on a 2003 WRX sedan. should be the same for most model years but i am not sure.

    i have circled certain things with either red or yellow circles to indicate points of intrest.

    keep in mind there may be a slight different way to do this but this is the way i did it...first off you will need these tools as follows: flat head screwdriver, phillips head screwdriver, 3/8" socket wrench with 10mm socket, jack, tire iron.



    you can find the tire iron under your trunk floor cover where your spare is (its in the subaru sheath)
    and while your at it grab that crank next to the tire.



    then you will need a jack, you can find the one that comes with the vehicle here on the left side of the inner trunk. Its held in place with a panel screw.



    turn said screw 1/4 turn in either drection and panel will open revealing the jack.



    Now you dont have to use the jack and iron that come with the wrx, you can use your own floor jack or what have you. i just went this route because not everyone has a floor jack. And if you do, it will be slightly easier but not by much. Same goes for the tire iron included with the wrx...some have have a different one or even air tools that they can use.

    pull out the jack and take the crank i mentioned earlier, head to the passenger front side of the car. place your tools in the vacinity of the passenger side for easy access.

    Next and probably most importantly try to do this on a level surface so the car does not want to roll safety is #1. I unfortunelty did this on a slight grade (driveway) but luckily had no issues. Next apply E-Brake, and then chuck the back tire with something to help prevent rolling as a just incase method...you can never be to careful. I used a paving stone...prefrebly find something a little bigger.



    next place the jack under the jack point from the front passenger side, insert hook end of crank threw eye of jack and crank untill it meets with proper jack point, but stop after its snug against it.



    if your unsure where the jack point is, refrence the owners manual it depicts a small image, and explanation.

    Next take the supplied tire iron and losen lug nuts on wheel but do not completly remove...
    If your having a hard time getting them loose with the supplied lug wrench slip a breaker bar over it (a small 12-24" section of pipe) this will provide the neccessary leverage you may need. Once the nuts are loose turn the jack crank clockwise to raise the car. But do not jack up too high...jack up just enough so there is 1/4" clearence fron the tire to the asphalt/concrete.

    Last edited by J.Skellington; 11-17-2006 at 05:14 PM.
    R.I.P. 2004 SRT-4
    Missing you...2005 STI

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User J.Skellington's Avatar
    Join Date
    Nov 2006
    Location
    Lake elsinore,CA
    Posts
    177
    after you have jacked the car up just enough off the concrete, take the lug nuts the rest of the way off and remove tire.



    now that the tire is removed you will see 6 of 8 screw tabs you need to remove, the one circled in yellow is kinda a ***** so you may need to use the needle nose pliers to coax it the rest of the way out.





    once you have those removed move to the corner of the car (just under/behind passenger fog lamp there are 2 final clips you will need to remove here....they look like this:



    and are located here...



    once you have all 8 said clips removed pull back fender liner starting where you just took off those last 2 clips and work your way up peeling back the liner, there is also a clip you will need to slide off of the fender thats attached to the liner itself.



    at this point, it should look this.... exposing the air box silencer

    Last edited by J.Skellington; 11-17-2006 at 05:16 PM.
    R.I.P. 2004 SRT-4
    Missing you...2005 STI

  4. #3
    Registered User J.Skellington's Avatar
    Join Date
    Nov 2006
    Location
    Lake elsinore,CA
    Posts
    177
    Now, pop open the hood and prop it up. you will see 2 bolts holding down your fresh air inlet



    remove these 2 bolts and give a slight twist as its on there rather well. but be careful not to break it.

    once removed it will look like this



    now that thats removed and your still on the top side you will notice a nut to the right of the inlet hole, remove it with a 10mm socket wrench or regular wrench (whichever you prefer) as its 1 of 2 nuts holding the air silencer in place.



    next move underneath the car under the passenger fog lamp, upon previously removing the fender liner looking straight up behind the fog lamp (as if on your back) you will see this nut. (10mm)



    remove nut and carefully coax air silencer out of inner fender area, should now look like this.





    re-attach nuts removed from silencer back onto silencer so as not to loose them (you may need this again someday if you decide to sell it, or decide you dislike the noise it makes)



    this is what it looks like now up inside your fender:




    at this point you may re install your fresh air inlet or you may choose to keep it out, i choose to keep mine in, though not directly connected to the air box anymore im sure SOME cooler air is directed its way, and i think it looks cleaner.



    reinstall the fender liner and all clips, if you forgot wich ones go where you can refrence the pic from earlier, (top left and right red circled are the smallest) (yellow there is only one of and theres no scredriver marks on top just flat/smooth) (bottom 2 red ones are like the top 2 but only larger) (and theres is one of phillips head style that goes to the far right edge of fender)



    now put your tire back on, put on lug nuts, make them snug, lower car by turning crank counter clockwise...now re snug lug nuts (tight)

    put your jack, crank, and tire iron back where you got them.
    unchuck your wheel and take her for a spin....recomend after short drive re snugging lug nuts after they have had time to settle.

    *note: installed K&N drop in at this time as well*
    Last edited by J.Skellington; 11-17-2006 at 05:25 PM.
    R.I.P. 2004 SRT-4
    Missing you...2005 STI

  5. #4
    Registered User tayhadar1's Avatar
    Join Date
    Apr 2006
    Location
    Spokane, WA
    Posts
    1,509
    Nice write up, how do you like it?
    2004 WRX Sti Cobb Stage 2
    GO COUGS!!!

  6. #5
    Moderator   Sasquatch's Avatar
    Join Date
    Apr 2004
    Location
    Southeastern PA
    Posts
    31,262
    I Support ClubWRX
    Very well done write up! Shows how to use the jack for those that do not know as well.

    If it were me I would have installed the GP Moto elbow at that time (I did install one).
    Moderator for: Aftermarket Vendor & Installer Review / Detailing Forum / Engine Modifications / Exterior & Appearance
    New Member Hangout / Off Topic / Tri-State
    ScoobyDMC #003 Blobeye Syndicate #10
    2004 WRX Sedan PSM 5MT Tactrix Stage 2+ Blouch TD04 19T @ 21 psi
    Mods & Pics

  7. #6
    Registered User bulletSTI's Avatar
    Join Date
    Aug 2005
    Location
    Connecticut
    Posts
    131
    Nice job, recently removed the silencer out of my 05 STI. The difference in sound is not really noticible at lower rpms, however, when you get past 4k you can clearly hear the intake. One thing I did different is I never actually removed the wheel. Instead, I took those screw taps out of the front right piece of plastic infront of the wheel and was able to twist it until the silencer came out of the fender.

  8. #7
    Registered User
    Join Date
    Oct 2006
    Location
    Denver, CO
    Posts
    14
    Sweet write up - wish they were all like that!
    02 wagon stock

  9. #8
    Registered User momo02WRX's Avatar
    Join Date
    Sep 2006
    Location
    SRQ, FL
    Posts
    107
    Quote Originally Posted by bulletSTI View Post
    Nice job, recently removed the silencer out of my 05 STI. The difference in sound is not really noticible at lower rpms, however, when you get past 4k you can clearly hear the intake. One thing I did different is I never actually removed the wheel. Instead, I took those screw taps out of the front right piece of plastic infront of the wheel and was able to twist it until the silencer came out of the fender.
    +1 I took mine out easily without taking the wheel off.

    Nice write-up though. This is better than the one I found before I did mine.
    02 MBP Stg 2 Bugeye
    Bugeye Mafia #107

    WRB '02 Stage 2+ WRX - SOLD (and dearly missed)

    07 OBP WRX (Wife's) SOLD

  10. #9
    Registered User J.Skellington's Avatar
    Join Date
    Nov 2006
    Location
    Lake elsinore,CA
    Posts
    177
    Quote Originally Posted by tayhadar1 View Post
    Nice write up, how do you like it?
    the sound was different for sure but nothing like the sound of a actual aftermarket intake, but it helped make me more familiar with my vehicle as well also you could slightly hear the bypass valve venting..
    Last edited by J.Skellington; 11-17-2006 at 08:39 PM.
    R.I.P. 2004 SRT-4
    Missing you...2005 STI

  11. #10
    Registered User WRXDriver82's Avatar
    Join Date
    Jul 2005
    Location
    Norwich, CT
    Posts
    743
    Awesome write up!

    Just another thing I decided to do. I also reinstalled my ram air scoop, but I didn't like how it just sorta hung there by not actually entering the fender well. So what I did was I hacked off the portion of the silencer that attached to the ram air scoop to lengthen the ram air scoop so it would actually enter the fender well again.

    For those who decide not to reinstall the ram air scoop you can get a fender plug here at SubaruGenuineParts.com
    NEW ENGLAND F4

    TUNERNetwork.com
    Great site for anyone in the north east.

  12. #11
    Registered User PJO42387's Avatar
    Join Date
    May 2006
    Location
    DF-DUB
    Posts
    2,386
    Nice!
    CGM

  13. #12
    Registered User rr1911's Avatar
    Join Date
    Nov 2005
    Location
    Central Florida
    Posts
    0
    great write up... this should be a sticky
    Army Ranger For Life ! Thin Blue Line
    Military Militia # 1911/ Blobeye Syndicate # 1911/ Modifier's Anonymous # 1911/ Hawk-Eye Alliance # 1911
    All We'll Drive
    DIFFERENT STROKES
    EVEN MY DENTIST TOLD ME FLOSS 7 DAYS A WEEK
    POST WH0RE KING

  14. #13
    Registered User
    Join Date
    Nov 2006
    Location
    maryland
    Posts
    28
    just a quick question.....
    wouldnt you lose performance a little since now all the incoming air through the little sccop in the front isnt being directed into the airbix, its just directed in the fender? like theres no more forced air going in there

  15. #14
    Administrator Trainrex's Avatar
    Join Date
    May 2003
    Posts
    26,593
    I Support ClubWRX
    No jack stand?

  16. #15
    Registered User J.Skellington's Avatar
    Join Date
    Nov 2006
    Location
    Lake elsinore,CA
    Posts
    177
    Quote Originally Posted by Joe3 View Post
    just a quick question.....
    wouldnt you lose performance a little since now all the incoming air through the little sccop in the front isnt being directed into the airbix, its just directed in the fender? like theres no more forced air going in there
    unfortunetly i dont have any kind of device to flow test this theory, but with as many bends and unsmooth surfaces that were in the silencer it was never a true ram-air...just a method to help fresher air enter.
    R.I.P. 2004 SRT-4
    Missing you...2005 STI

+ Reply to Thread
Page 1 of 8 12345678 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •