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Cold air feed.

Discussion in 'A4/S4 forum(B5 Chassis)' started by rs13219, Mar 5, 2006.

  1. rs13219
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    rs13219 Member

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    [Mar 5, 2006]
    I was thinking of altering my airbox ducting to pull in more cold air but not sure how am gonna do it. Don't want to cut too many holes & still wanna keep both foglights & the original airbox, was possibly thinking about altering the intake port. Has anyone done this?

    Cheers, Rob.
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  3. Soupie69uk
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    Soupie69uk Owner

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    [Mar 5, 2006]
    yeah i have done it.
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  4. rs13219
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    rs13219 Member

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  5. Soupie69uk
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    Soupie69uk Owner

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    [Mar 5, 2006]
    No not just now.

    I will take some tomorrow though for you.

    I want to buy one more bit for it though.

    If you look in the other side that feeds to the intercooler you will see a black plactic panel because as mine is you can see the tow hook and the paint behind it.

    [​IMG]

    Thats the part at the top left of that pic.

    This should help make it look a little better and help direct the airflow.

    Although you can onlt see the tow hook if you look up close.

    Its really easy to do.

    I did mine while fitting my coilovers a few weeks ago.

    You take out the plastic vent.

    Turn it over and you will see all these little plastic bits holding on a cover. I used a tiny screwdriver to break these.

    Then you can pull off the back plate.

    I then cut the back plate as it has a clip on it to help the vent stay in place otherwise it may rattle and fall off.

    I just used a tiny saw to do this.

    Really easy job to do and will take you like 15mins tops.

    I will try take pics tommorow for you though.

    Cheers.
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  6. rs13219
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    rs13219 Member

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    [Mar 5, 2006]
    Mine's not a turbo mate. I know am not gonna see as big gains as i would if i had a turbo, but am gonna fit a panel filter & have it chipped which is why i want to alter the feed.
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  7. Soupie69uk
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    Soupie69uk Owner

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    [Mar 5, 2006]
    Ok then i will still show you pics as yours may be similar and some other boys on here may wish to see the pics to.

    And to be honest i dont have much planned for tomorrow is my first day in my week off and dont want to get bored on the first day off!!

    But tomorrow will hopefully be a little different as my mate bought a 400+bhp Escort Cossie the other day so want a shot of that!! /ubbthreads/images/graemlins/devil.gif

    May take a few pics of it to let some of you see it.
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  8. rs13219
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    rs13219 Member

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    [Mar 5, 2006]
    Yeah appreciate that, as you say some bits may be similar.
    Cheers.
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  9. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Hi sorry for the delay but here are the pics i said i would take.


    This is what the cut vent looks like fitted to the car up close.

    [​IMG]

    [​IMG]

    [​IMG]



    I whipped the vent off the car to to take a couple of pics for you.

    You can see the bit whick i cut and refitted onto the back of the vent as to keep the clip.


    [​IMG]

    [​IMG]


    Here is the front of it ready to fit back onto the car.

    [​IMG]


    Cheers.
    #8
  10. dummi
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    dummi smoking a6

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    [Mar 7, 2006]
    i did that on my passat NA , if you try using the ram air method chucking as much air through the inlet as you can duct i noticed the car would guzzle fuel at high speed, after some experimenting it runs best piping cold air near to the box inlet, you would keep good mpg and still good response engine would take what it needs. done this with a big capacity american v8 too stock ram air system uses to much fuel daily i'm sure with some experimenting you will come up with a set up thats right, don't cut too many holes you'll lose low end torque, more holes are valuable when you have had head work and cams and looking for top end. thats all i have gathered trying slightly different every week or so, if you haven't already switch to a high flow panel filter, oem airboxes are a little restrictive but on the whole very good for a daily driven cars, have fun dude
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  11. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    I have a piperX sort of induction kit.

    I will see if i can find a pic.
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  12. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Here is a pic of it.

    [​IMG]

    Would love the Carbonio one though!!!
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  13. dummi
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    dummi smoking a6

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    [Mar 7, 2006]
    that looks cool what difference did you get from that soupie?
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  14. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    God knows really maybe more resonsive but might just be in my mind.

    I might try and fabricate a big heat shield next to the turbo just to make sure its not sucking in too much heat.

    But i have the S4 wheel liner to and that puts cool air onto it as well.
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  15. dummi
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    dummi smoking a6

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    [Mar 7, 2006]
    hehe, looks good anyway bet it sounds good too
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  16. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    Soupie whats the S4 wheel liner??

    Does it aid ducting?
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  17. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Well there is not very much indution noise.

    Just like very low down. You do hear the flutter of the dv though.
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  18. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    Soupie can you check my last post?
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  19. imported_VaulterTim
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    imported_VaulterTim Guest

    [Mar 7, 2006]
    S4 wheelarch liners have vents in them to aid airflow to the intercoolers, OE 1.8T ones don't...
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  20. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Hi sorry Beerzo never saw your post as i posted at the same time.

    Yeah Tim has explained it.

    Since our cars dont have intercoolers at both sides so it puts air onto the airbox.
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  21. jcb
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    jcb Active Member VCDS Map User

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    [Mar 7, 2006]
    soupie, sorry to hijack the post but what is the black pipe that runs left to right across the head (turbo side) and what is the valve thing (that I mistook for the recirc valve when i first got it!) that it runs into, the one sticking out of the inlet pipe on teh right of the pic?
    Cheers.

    I have a cone filter with two heat sheilds and a cold air pipe, both the original one from the top of th egrill and one from lower down.
    will dig up a pic...
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  22. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    Soupie you got a part number?
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  23. Soupie69uk
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    [Mar 7, 2006]
    This black hose with the Red box round it?

    And the valve with the Yellow box?


    [​IMG]


    I cant remember what these are i have read before what these are. Sorry.

    I mistook that valve as the DV when i first got the car as well.

    Cheers.
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  24. Soupie69uk
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    [Mar 7, 2006]
    [ QUOTE ]
    Soupie you got a part number?

    [/ QUOTE ]

    Here they are i think.

    8D0821171G Think this is the one for the intercooler.

    8D0821172G and i think this is the one for the airbox.


    I just told the part guy to get me the front wheel liners off a 2000 S4.


    Make sure to confirm the parts with the guy as i dont want you ordering the wrong part.


    Cheers.
    #23
  25. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    I have etka so i will double check them
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  26. Soupie69uk
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    [Mar 7, 2006]
    Ok then, i think these numbers will be ok.
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  27. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    Did you use them both. Does one feed more air to the I/C?

    Do they fit straight in or do you need to mod or move the air box about for the one on that side
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  28. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Yeah the pass side ones feeds onto the ic.

    Yeah fit straight on. Its a messy job though as all the muck thats on them.

    Can be fiddly at times but its not hard.
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  29. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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    [Mar 7, 2006]
    Do you remeber much they skint you?
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  30. Soupie69uk
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    Soupie69uk Owner

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    [Mar 7, 2006]
    Not exactly sure its under £20 each. I have had them over a year now.

    I will see if i can find the reciept later or tommorow.
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  31. Beerzo
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    Beerzo Masa'warty 3200... Talk To Me!

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  32. jcb
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    jcb Active Member VCDS Map User

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    [Mar 7, 2006]
    [ QUOTE ]
    This black hose with the Red box round it?

    And the valve with the Yellow box?


    [​IMG]


    I cant remember what these are i have read before what these are. Sorry.

    I mistook that valve as the DV when i first got the car as well.

    Cheers.

    [/ QUOTE ]

    Those are they... anyone?
    #31
  33. imported_VaulterTim
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    imported_VaulterTim Guest

    [Mar 8, 2006]
    The black pipe is the crankcase breather... it vents any blow-by gases and oil deposits from the engine back into the intake. If you take a look inside your TIP or DV you will see some oil deposits. This is what causes it.

    I have no idea what the little black box is for though... have wondered the same thing myself for a while. Maybe it has a diaphragm in it..? No idea! /ubbthreads/images/graemlins/noidea.gif
    #32
  34. RichA3Turbo
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    RichA3Turbo ...Watching you! Staff Member Moderator

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    [Mar 8, 2006]
    Its just a valve for the crank case breater..Called a PCV.

    Rich
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  35. imported_VaulterTim
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    imported_VaulterTim Guest

    [Mar 8, 2006]
    Ah! That's the PCV... makes sense now /ubbthreads/images/graemlins/smile.gif

    How exactly does it work? I don't think it's actuated electronically or anything of that nature, just seems to be a mechanical device... hence my guess at a diaphragm.
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  36. JayB5UK
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    [Mar 10, 2006]
    Soupie, does the wheel arch liner just draw the air from behind the intercooler away from it kind of?

    Also - Re: front grilles, how do you remove them, mine is facelift with foglight and I want to do away with the filled part, was thinking of drilling it til I saw this post...

    Cheers.
    #35
  37. technics100
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    technics100 Member

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    [Mar 10, 2006]
    I did the same sort of thing on my 2.6. I fed a 60mm duct from the lower grill to a hole in the underside of the airbox.

    I cut a hole in the base of the standard airbox and fed the 60mm pipe through, blocked up the existing holes in the airbox. This meant that the only air feeding the car was from the front lower bumper. It made a differnce on the v6..

    I made a scoop out of plastic and fixed it to the rear of the lower grill...

    I also bought the airbox from a breakers for £10, so I could put the car to standard when I sold it..

    Halfords now do a 80mm Dia aluminium tubing, which would do the job very well.
    #36
  38. Soupie69uk
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    [Mar 10, 2006]
    There are two clips on the right hand side of the drivers side vent. Use a flat head screw driver and move the top one down and the bottom one up.

    Then just pull the vent out pulling from the clip side.

    No need to drill it. Just rip the backing off and trim in and refit the part which is needed. (the bit which helps hold it on)

    I think the S4 arch liner will allow air to travel through it now directing air behind it and onto either the intercooler or the airbox.

    The Halfrauds aluminium ducting is very flimsy and i would not buy it myself. I know of two or three people who have bought it and it just folds in and tears very easily.
    #37

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