Dismiss Notice
Hi Guest, stickers are available from our online store.

The correct way to do an N249 bypass the full guide

Discussion in 'Mk1 Leon Guides (1M) 2000-2006' started by mc funbot, Jan 18, 2013.

  1. rcky89

    rcky89 Active Member

    Joined:
    Jul 24, 2013
    Messages:
    71
    Likes Received:
    0
    The pipe u T into the dv line. Is that the one that gets blocked by the little bolt?
     
  2. arb79

    arb79 Old but never too old

    Joined:
    Oct 18, 2010
    Messages:
    238
    Likes Received:
    0
    Hi mate I've had to go away now for queen and country so I'll give you a shout if and when I get back :(:p
     
  3. Sam_chadders

    Sam_chadders Active Member

    Joined:
    Jul 15, 2014
    Messages:
    6
    Likes Received:
    0
    Ok mate could you drop me a text on 07427656627 and can arrange a day
     
  4. leegreenaway

    leegreenaway Active Member

    Joined:
    Sep 1, 2013
    Messages:
    505
    Likes Received:
    2
    Sorry for the late reply, yes the one that gets blocked you T into the DV line! You could T it into the FPR line instead I suppose.

    I replaced that braided how with some vac hose to make it easier.
     
  5. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    Well I did a bypass on a polo gti sunday. What a treat not to hard. N249 and sai all done and running lovely.
     
  6. mwflynn06

    mwflynn06 Active Member

    Joined:
    Jul 27, 2011
    Messages:
    126
    Likes Received:
    1
    Followed this guide 2 days ago. Everything's been superb. This morning on way to work an EML has appeared what could it be ? Going to reset it tonight and see if it appears again. I did notice that on start up that it makes a weird noise like its hesitating to start ??
     
  7. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    Thats a strange one. Sure you blocked of everything and nowt is leaking there. Could be sai relaited buddy.
     
  8. useyourname

    useyourname Active Member

    Joined:
    Aug 2, 2012
    Messages:
    322
    Likes Received:
    0
    I'm going to do the bypass on my AUQ tomorrow. I'll try to get pictures aswell.

    In picture 13, it says:

    "remove all pipe of the resistors"

    I'm assuming this means once you remove the pipes only the resistors remain on the pieces you removed them from. So I don't need to purchase any resistors?

    I'll also be using the T piece to include the SAI? braided hose to prevent the fault code.

    Thanks.
     
  9. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    yeah thats the 1 mate. T in to sai stops that being at fault. yes remove all the vac off the n249 plugs and the put it back on. that way the n249 works as a resister and can do its thing. any probs just ask.
     
  10. useyourname

    useyourname Active Member

    Joined:
    Aug 2, 2012
    Messages:
    322
    Likes Received:
    0
    I didn't get a chance last weekend it was pissing it down non stop. Might have a go on Saturday if weather holds off. Cheers.
     
  11. turbomick

    turbomick onvi yellow cupra r

    Joined:
    Apr 12, 2011
    Messages:
    401
    Likes Received:
    1



    Hi mate so to do the n211 and n249 by pass but keep the sai pump I just go from inlet to dv then t in to dv to the pipe you blocked. Leave every thing pluged in and no faults should pop on vag com
     
  12. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    thats it mate yes
     
  13. turbomick

    turbomick onvi yellow cupra r

    Joined:
    Apr 12, 2011
    Messages:
    401
    Likes Received:
    1
    Cheers mate ive been getting the code on vagcom for pressure drop between turbo and throttle body so gonna try this as it says it could be faulty n249
     
  14. Cupra260391

    Cupra260391 Active Member

    Joined:
    Nov 22, 2014
    Messages:
    25
    Likes Received:
    0
    are you suppose to do anything with the fpr pipe ? as on another guide they t the vac line from dv to mani into the fpr ?
     
  15. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    thats the reason this guide was made. each thing has its own line not loads of crap T in to other lines
     
  16. EggHead19

    EggHead19 Active Member

    Joined:
    Oct 22, 2015
    Messages:
    31
    Likes Received:
    0
    Finally got round to doing this properly brilliant guide and just seems neater chears soon to do the sai and charcoal canister


    Sent from my iPhone using Tapatalk
     
  17. kiemcd

    kiemcd Active Member

    Joined:
    Mar 12, 2016
    Messages:
    45
    Likes Received:
    0
    Followed this guide on my Cupra 20vt 180 AUQ car boosts stronger and sounds great!
    Been done for approx 1-2 weeks now and had the dreaded eml appear but not bothered.. Going to sack off the whole sai system next.

    Sorry to bump old thread btw
     
  18. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    Hey no worries glad it's all ok for you buddy.
     
  19. kiemcd

    kiemcd Active Member

    Joined:
    Mar 12, 2016
    Messages:
    45
    Likes Received:
    0
    Did you get round to doing a guide for the sai ? Cheers


    Sent from my iPhone using Tapatalk
     
  20. mc funbot

    mc funbot its a beast its got boost

    Joined:
    Jan 29, 2010
    Messages:
    1,473
    Likes Received:
    3
    I don't have time I keep meaning to do it..
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice