Volkswagen Passat Forum banner


  1. Need exhaust downpipe advice, repair or replace

    Volkswagen Passat B5 Discussion
    I have a 2003 Passat Wagon 1.8T and the exhaust connection has rusted away near the flex pipe. The flex pipe itself does not appear to be broken but it's hard to tell because of the braiding. The downpipe (which the flexpipe is part of) was cut after the mount point and every few years meineke...
  2. WTB ISO: B6 2006 Passat 2.0T - downpipe decat test pipe

    WTB/WTT Section
    Looking for downpipe (no cat) to replace stock. 2006 2.0T engine. FWD, auto. New or used. Shipping to 48114.
  3. ATQ Downpipe Diameter

    B5 Garage
    Have seen a bunch of answers searching, I have a 2003 2.8 ATQ engine,what is the outside diameter (O.D.) of the downpipe (with integral cat) coming from the manifold right before it attaches to the flex pipe. I apologize for my laziness but want to be reasonably prepared before I go under this...
  4. How to replace the downpipe and/or catalytic converter on a 1.8T

    B5 Information-Base
    I replaced the downpipe on my '99 B5 1.8T AEB engine a while back, but I made the mistake of trying to do it with the catalytic converter still installed. I wanted to pass along this method so the rest of you don't follow in my footsteps and make the same mistake. The following procedure will...
  5. looking for turbo+manifold and downpipe

    Volkswagen Passat B5 Discussion
    hi, iam searching to upgrade my k03 on my 97 passat. im trying to find a seller who will offer a k04 turbo + manifold and a downpipe thats all bolt on. can you help me find thoe components on ebay maybe?
  6. Aftermarket downpipe( flex section)

    Volkswagen Passat B5 Discussion
    Hey guys I ordered a test pipe to replace my cat and since the flex pipe has to come out I figured this would be a perfect time to replace the flex pipe with an aftermarket piece. Does one exist? If so brands to buy or stay away from?
  7. Anyone know part numbers for turbo to manifold and to downpipe gaskets?

    Volkswagen Passat B5 Discussion
    Hello Everyone! A week or so ago I posted on here that my daughter's 01 Passat GLS 1.8t (AUG) lost all of its coolant, again. I found the source, and it was a rupture in the coolant return line from the turbocharger. So, I have pulled the entire front end off the car to make for slightly...
  8. Passat 1, owner 0: downpipe woes

    Volkswagen Passat B5 Discussion
    So I did my due diligence and searched this and other forums for tips on removing the downpipe on my 2000 1.8t, but it remains stubbornly in place. I read one work-around is to remove it still attached to the cat, but then I'd have to remove the O2 sensors. The top one is easy enough to get to...
  9. New member

    New Member Introductions
    Im in the market for my first car, and am set on a 2003 b5 1.8t. I was just wondering what some of the easiest, first mods I should do are. I was thinking of starting with the down pipe.
  10. Downpipe / flex pipe question

    Volkswagen Passat B5 Discussion
    My 2001 Passat (FWD, 1.8T tiptronic, 155k mile) one day suddenly started to make uproarious noise when I accelerate from a stop. It stayed like that ever since (as if I am inside a helicopter). The sound seems to originate from beneath the engine bay. There is also some hint of exhaust gas...
  11. WTB 99 1.8t 2.5/2.25 downpipe LHV

    WTB/WTT Section
    was seeing if anyone in the LHV area has stock(2.25)" or aftermarket 2.5" downpipe from a a4/passat cat back stainless steel/aluminum...seeing whats out there first hoping i could find something cheaper before purchasing online.... pm with contact info if you do thanks
  12. A few custom exhaust questions

    Volkswagen Passat B5 Discussion
    Hey guys! I have a 2003 1.8T AWM FWD Automatic, and I'm planning on putting an exhaust on my car soon, and I'm having a few questions. My plan is to get a TT 2.5" downpipe, and then get a muffler shop to custom make a setup with a glasspack resonator, and a magnaflow muffler. I have been doing...
  13. Replacing Flexjoint with New Downpipe (2003 1.8t)

    B5 Garage
    I have figured out the reason that my car sounds terrible is the fact that the flex joint is simply wrecked on my car. I am looking to replace the flex joint so my car goes back to normal, and I know very little about this so I am going to ask a bunch of questions. 1. The only way to replace...
  14. 06 2.0t sounds like a weedwacker

    Volkswagen Passat B6 Discussion
    Hey while i was driving home out of no where my 06 passat started giving off some solid exhaust leak sounds it happens all the time even when the car is in park it sounds like a weedwacker and i did some research and saw that a down pipe crack is fairly common just wondering if anyone else has...
  15. B5 1.8t t3 5bolt downpipe.

    WTB/WTT Section
    As the title states. I'm looking for a 5 bolt downpipe for my turbo setup. I don't really care what size piping as long as it's 2.5 or bigger. Also need to know what manifold it used with
  16. B5.5 Downpipe removal

    Volkswagen Passat B5 Discussion
    1.8t wagon. Bought the Techtonics downpipe and exhaust and am curious how difficult the downpipe is to get to to remove? Haven't had a minute to get under car and look. Assume exhaust isnt too bad as it is stainless and should come right out. Quality is not a question so installation should be...
  17. APR Tune & Downpipe & Intake questions

    Volkswagen Passat CC Discussion
    Hey guys Picking up my CC R-line Monday..!!!! Silver with BLK interior and pretty much loaded, has backup camera....:thumbup: long story short my buddy is a manager at our VW dealer and I asked him if I could drive one for a couple hours, run errands and really get to experience it to make...
  18. F.S. 1.8t AEB engine

    Parts For Sale
    This is all stuff coming off my car because I'm upgrading to a GT2871r setup. Shipping is not included. Shipping will be whatever shipping costs. SOLD: genuine Borg Warner K04-15 from 034 Motorsports. SOLD: Cast, high flow exhaust manifold for longitudinal 1.8t engine with K03, K04 or Hybrid...
  19. Have to replace catalytic converter and downpipe

    Volkswagen Passat B5 Discussion
    So, the wife's car is long overdue for a new catalytic converter and the flex pipe is also leaking. I had a new flex pipe welded in about 5 years ago but I've since realized it's cheaper to just replace the entire down pipe assembly than take it to a muffler shop. $200+ at the muffler shop vs...
  20. Replacing downpipe

    Volkswagen Passat B5 Discussion
    Good morning all, the Flex portion of my downpipe broke the other day - new downpipe just showed up. Looks like its going to be a knuckle busting, curse word infused good time getting the bolts from the old downpipe out of the cat. Other than penetrating oil - any suggestions to make the...