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  1. #1
    Established Member Two Rings esee135's Avatar
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    B5 Vacuum Line Simplification DIY???

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    Is there a vacuum line simplification DIY for the B5? Would it be the same as the B6? Just did the timing belt and the I have ALOT of ratty looking vacuum lines. Wouldn't mind simplifying the system a bit and lose more than a few check valves.

  2. #2
    Senior Member Two Rings BLK_A4's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    This should help. http://www.audizine.com/forum/showthread.php?p=2877619
    I have done this to my engine bay. If you have any questions you can just PM me : )

  3. #3
    Senior Member Two Rings VirginiaBeachA4's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by BLK_A4 View Post
    This should help. http://www.audizine.com/forum/showthread.php?p=2877619
    I have done this to my engine bay. If you have any questions you can just PM me : )
    off topic but you do notice that "friends" is spelled wrong in your sig right?
    '99.5 Jaspis Green (Minty) 1.8TQM
    - Forge diverter valve
    - vmaxx
    - Merc Alphards
    - resonator removed
    - K&N cone filter

  4. #4
    Forum Moderator Four Rings biketsai's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by VirginiaBeachA4 View Post
    off topic but you do notice that "friends" is spelled wrong in your sig right?
    LOL , damn I cracked up so hard reading that
    BetaAlphaTau Member #12
    01' A4 1.8TQMS 5spd swapped
    GT2871R|CTAPP MAFless|034 EM|Godspeed FMIC|APR 2.5"|EVO MS DV|CM FX400-LWFW
    18" RS4 Reps.|S4 Front/Skirts/Seats/Brakes|RS4 Grill|CF Trim
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    My 5-Speed Swap DIY
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  5. #5
    Veteran Member Three Rings Coopa's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Is there a permanent way to make the cel go away after this?

  6. #6
    Senior Member Two Rings RockyMountainB5's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by Coopa View Post
    Is there a permanent way to make the cel go away after this?
    Somone with tuning software can do a Hex-edit on your ECU's flash memory to remove (really set to 0) the blocks of data that pertain to checking your emissions systems. If you simply remove the checks for the SAI and blah blah, the ECU assumes they are working and moves on - no CEL. You can delete checks for the oxygen sensors too.
    You can also pass emissions this way after doing a SAI/PCV delete - you just need a tuner to set "readiness" on your ECU.
    There is someone on audizine who says "set readiness on ECU $50" in his sig, thats what you want.
    2001.5 A4 1.8TQMS

  7. #7
    Veteran Member Four Rings thenofjboy's Avatar
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    08 S-line QMT6 , B5 KO4 & my german sheppard
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    Re: B5 Vacuum Line Simplification DIY???

    IIRC his username is: k0mpresd - but he changed his signiture recently, just shoot him a PM to check

  8. #8
    Veteran Member Three Rings jsquillz22's Avatar
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    b5 s4
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by VirginiaBeachA4 View Post
    off topic but you do notice that "friends" is spelled wrong in your sig right?
    oooo burrn!!!

    hey buddy how them coils?
    OEM+

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  9. #9
    Senior Member Two Rings VirginiaBeachA4's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by jsquillz22 View Post
    oooo burrn!!!

    hey buddy how them coils?
    I wasn't trying to offend him.

    The coils are awesome. They don't feel as bouncy as everyone says they are.
    '99.5 Jaspis Green (Minty) 1.8TQM
    - Forge diverter valve
    - vmaxx
    - Merc Alphards
    - resonator removed
    - K&N cone filter

  10. #10
    Veteran Member Three Rings jsquillz22's Avatar
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    b5 s4
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by VirginiaBeachA4 View Post
    I wasn't trying to offend him.

    The coils are awesome. They don't feel as bouncy as everyone says they are.
    i know the guy lives by me hes pretty cool.... his car is/was my twin! except he has brilliant black and i was rockin the ebony!

    an im glad u liek em
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  11. #11
    Veteran Member Three Rings discontained's Avatar
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    '01 A4 1.8t
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    Re: B5 Vacuum Line Simplification DIY???

    So I did this today. I got tired of replacing check valves and vacuum lines.

    Do have a question. I took the EGR off, and welded the hole shut (on the EGR bracket, not the block. lol) I didnt feel like spending $30+ and waiting for a part . I noticed my rear coolant flange is leaking coolant all over my transmission. Is there a way to fix it, or wouuld I need to buy a whole new flange? I know there cheap i think -/+ $10?, or is it just a bad o-ring. ( iknow thats off topic so let me get back on)

    I read most of those links on the DIY but got confused. The Oil breather ontop of the oil filter hosing, that line T's with the valve cover and dumps to the atmosphere or does it need to be sealed? Also the DV valve can i leave the line that goes from the DV to the TIP to atmosphere? It sounds hella cool when i went to the store to get some parts.
    For Sale $3,500 -'99 Audi A4 1.8T Quattro 5sp
    -2001.5 Audi A4 1.8T Quattromatic - BT .50 trizzle -RIP

  12. #12
    Veteran Member Four Rings thenofjboy's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    you might need to replace the flange bc the plastic tends to warp etc form all the heat but the O-ring may not be seated correctly or it just needs to be replaced. Check out the link below - i wouldnt use silicone like the one guy said
    http://www.audizine.com/forum/showthread.php?t=328706

    i replaced my flange & O-ring during the summer, sanded the back of the block & been good ever since

  13. #13
    Veteran Member Three Rings discontained's Avatar
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    '01 A4 1.8t
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by thenofjboy View Post
    you might need to replace the flange bc the plastic tends to warp etc form all the heat but the O-ring may not be seated correctly or it just needs to be replaced. Check out the link below - i wouldnt use silicone like the one guy said
    http://www.audizine.com/forum/showthread.php?t=328706

    i replaced my flange & O-ring during the summer, sanded the back of the block & been good ever since
    ahh i must have missed that thread lol. Thanks man..
    For Sale $3,500 -'99 Audi A4 1.8T Quattro 5sp
    -2001.5 Audi A4 1.8T Quattromatic - BT .50 trizzle -RIP

  14. #14
    Senior Member Two Rings RockyMountainB5's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by discontained View Post
    Also the DV valve can i leave the line that goes from the DV to the TIP to atmosphere? It sounds hella cool when i went to the store to get some parts.
    I think this means you are venting the excess pressure in your lines to atmosphere instead or recirculating it - same issue as the BOV, if you dont recirculate at least some of the air the car wont run right - although i have no idea what tune you are running.
    2001.5 A4 1.8TQMS

  15. #15
    Registered Member Four Rings
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by RockyMountainB5 View Post
    I think this means you are venting the excess pressure in your lines to atmosphere instead or recirculating it - same issue as the BOV, if you dont recirculate at least some of the air the car wont run right - although i have no idea what tune you are running.
    Question about this....could you make your own splitter valve by just putting a T in going to TIP/atmosphere?

    -John
    BAT B6 A4: GT3582, built AEB head, supertech hardware, inconnel valves, port and polished, IE rods, Spa manifold, Fully rebuilt 01E with JHM kit, s4 drivetrain, custom 3" exhaust, Bilstein PSS9, 3.0L A4 brakes, and the list goes on..

    Waiting to install: S4 Rear Bumper, B6 S4 Rear Brakes, 18z front calipers, USP front lip, USP Door Blades, Black Interior, JHM Short Shifter

    Looking to buy: 034 Rear Swab Bar + End Links, Black S4 Recaros, S4 Door Blades, Black B7 Center Console

  16. #16
    Veteran Member Three Rings discontained's Avatar
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    '01 A4 1.8t
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    Re: B5 Vacuum Line Simplification DIY???

    I dont have TIP anymore :D!

    The hose that runs from the DV to the TIP is still hanging there. I drove it arouund today and it seems like 5% faster, I am on GIAC tune. It sounds pretty cool ha, i gotta get a video of it.
    For Sale $3,500 -'99 Audi A4 1.8T Quattro 5sp
    -2001.5 Audi A4 1.8T Quattromatic - BT .50 trizzle -RIP

  17. #17
    Veteran Member Four Rings wesleyfbm's Avatar
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    the 01 a4 tttt and my BMXer
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    Re: B5 Vacuum Line Simplification DIY???

    should be doing this soon...just gotta find time between school and work 7 days a week.

  18. #18
    Senior Member Two Rings BLK_A4's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by VirginiaBeachA4 View Post
    off topic but you do notice that "friends" is spelled wrong in your sig right?
    Oh haha god i feel like an idiot!! Thanks i will change that now. . But jsquillz when is the k04 going in? I wanna see how much more power you make.

  19. #19
    Veteran Member Three Rings jsquillz22's Avatar
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    b5 s4
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    Chicago

    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by BLK_A4 View Post
    Oh haha god i feel like an idiot!! Thanks i will change that now. . But jsquillz when is the k04 going in? I wanna see how much more power you make.
    maybe if you pick up your phone!
    OEM+

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  20. #20
    Veteran Member Four Rings thenofjboy's Avatar
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    08 S-line QMT6 , B5 KO4 & my german sheppard
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by discontained View Post
    I dont have TIP anymore :D!

    The hose that runs from the DV to the TIP is still hanging there. I drove it arouund today and it seems like 5% faster, I am on GIAC tune. It sounds pretty cool ha, i gotta get a video of it.
    any point in still keeping that hose then? maybe put a mini filter on the DV......i dunno haha

  21. #21
    Veteran Member Three Rings discontained's Avatar
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    '01 A4 1.8t
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by thenofjboy View Post
    any point in still keeping that hose then? maybe put a mini filter on the DV......i dunno haha
    lol thats what im trying to figure out...
    For Sale $3,500 -'99 Audi A4 1.8T Quattro 5sp
    -2001.5 Audi A4 1.8T Quattromatic - BT .50 trizzle -RIP

  22. #22
    Senior Member Two Rings RockyMountainB5's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Well, i was trying to say that your ECU thinks that air is being recirculated - i have heard of people running BOVs at 100% (essentially what you are doing), and it causing all sorts of CELs and rough running. But if it works.....then more power to ya. I believe that the standard was to run the line coming from your DV back into the TIP, however.

    Since you just did this i have a question.....Did you attach your intake manifold rear bung to your brake booster, and what affect did that have on the feel/strength of your brakes?
    2001.5 A4 1.8TQMS

  23. #23
    Veteran Member Four Rings thenofjboy's Avatar
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    08 S-line QMT6 , B5 KO4 & my german sheppard
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    Jersey City

    Re: B5 Vacuum Line Simplification DIY???

    i gots a 98 - so i don’t have much crap at the back of my manifold like you other guys do with the 01 models but either way that line that connects from the back of the manifold to the brake booster is very important - it shouldn’t be touched.

    when i removed all that mess & check valves, i capped the port on the side of the intake manifold near the TB & the port on the bottom as well but i left the one on the back of the IM attached to the brake booster (thers a type of check valve in that hard line)

  24. #24
    Veteran Member Three Rings discontained's Avatar
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    Re: B5 Vacuum Line Simplification DIY???

    Quote Originally Posted by RockyMountainB5 View Post
    Well, i was trying to say that your ECU thinks that air is being recirculated - i have heard of people running BOVs at 100% (essentially what you are doing), and it causing all sorts of CELs and rough running. But if it works.....then more power to ya. I believe that the standard was to run the line coming from your DV back into the TIP, however.

    Since you just did this i have a question.....Did you attach your intake manifold rear bung to your brake booster, and what affect did that have on the feel/strength of your brakes?
    To answer in bold.. I didnt feel much difference, I just put new pads on the other day and they feel.. less spongy. However it could be my mind playing tricks on me!
    For Sale $3,500 -'99 Audi A4 1.8T Quattro 5sp
    -2001.5 Audi A4 1.8T Quattromatic - BT .50 trizzle -RIP



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