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cats

  1. Mah cats be fooked

    New Member Introductions
    Need new cats :( b5.5 v6. anyone got advice on cheap cats
  2. Can't get cat out of B5 2.8 which is necessary to get rack and pinion out

    Volkswagen Passat B5 Discussion
    I educated myself with the steps for removing the rack and pinion. Unfortunately, the b5 isn't always the same. When it came to removing the lower bolt (from below) on the rack and pinion. The cat and a heat shield were in the way. So to get access I need to remove the cat. I replaced the...
  3. Replaced cats... throwing two codes now

    B5 Garage
    So I have replaced my drivers side catalytic converters with direct first magna flow... I will say the DIY's were a great help save for the fact the my car has two cats and the pictures with the car on the ramps only had one... needless to say, that is a TIGHT fit and required a lot cursing to...
  4. Anybody know a good place to buy new cats?

    Volkswagen Passat B5 Discussion
    I have a 2000 v6 wagon, manual and the previous owner put the cheapest, thin-walled cats on it possible. After welding in new flex joints a couple of years ago and recently doing some creative patchwork it's time to replace them. The final straw was the driver's side pipe cracking at the end of...
  5. 4motion v6 exhaust question (cats going out)

    Volkswagen Passat B5 Discussion
    Hey guys, to start off I searched for info regarding this subject, to no avail. I own a 2001.5 v6 4mo. I've noticed a decrease in fuel mileage and when I checked for codes, I noticed one that mentioned the catalytic converters. I didn't write it down and have since wiped the codes. I've decided...
  6. Rear end clunk related to new cats? Fuel tank pressurization? Suspension?

    Volkswagen Passat B5 Discussion
    2004 GLX wagon V6 2.8L 5 speed auto. Recently had front control arms replaced, and previous annoying but not majorly concerning front end noises went away. After a couple of years of what I thought were false alarms of bad O2 sensors and ultimately some misfires, I ended up replacing the...
  7. Cats gutted - Resurfaced head - reworked headers [V6 30V] $1500 later

    Volkswagen Passat B5 Discussion
    After another $1500 the V6 is getting seriously fast :D I got a call back from the shop - all 4 cats are gutted and O2 sensor readings are being emulated by a computer so NEVER a Cat CEL EVER again!!! :bowdown: Head and Valve covers have been removed and received a great cleaning, painting and...
  8. Looking for High Flow Cats - trying to not set off CEL

    Volkswagen Passat B5 Discussion
    I am on the lookout for some high flow cats. To be more exact the left and right lower cats. I am not sure if all converters have O2 sensors but if I am gonna replace any with performance cats, I would like to preserve my NO CEL spree. Anybody with recommendations or experience in this...
  9. What are the best cats for my b5???

    Volkswagen Passat B5 Discussion
    I am looking for universal cats with o2 port for my b5. Both original cats are rusted out and both flex pipe are busted. My mechanic is going to weld everything back together i just need the right parts. I already picked up two 2in flex pipes but i am having trouble finding the right cats. does...
  10. 2002 Passat v6 -- no O2 sensors or cats and trying to pass OBD emissions check

    Volkswagen Passat B5 Discussion
    I would preferably like to solve this problem by reprogramming the computer to skip the cat check or some other work around. If I remember from my 2000 Passat wagon I used to own, the VAG COM cable is expensive. Can I get a cheap cable somewhere and download the program on thrpiratebay to...
  11. 2001 B5.5 V6 Who has hollowed out their cats?

    Volkswagen Passat B5 Discussion
    Just bought a 2001 B5.5 with a v6 and aparently both cats are gone. I already know all about it being illegal and I don't care about the backpressure or sound debates. I am planning to just hollow them out until I get some cash to replace them (only paid $2500 for the car). Anyone who has done...
  12. 2001 V-6 Passat 5 speed Cats

    New Member Introductions
    To all, Thanks for all posts. Very helpful when I come across new issue. Now I have 1 for you. Please advise. Passenger side flex cracked - engine end of flex. 198,000 miles. ALL ORIGINAL EXHAUST. ALL STILL VERY SOLID. I will replace passenger side engine mount first. Thank you for that...
  13. Hi, you crazy VW cats. Gonna get a B5.5...

    Volkswagen Passat B5 Discussion
    At least that's the plan unless you talk me out of it. :) It's a 2001, late model year GLX sedan 4Motion. 140k miles. Timing belt and water pump replaced 25k miles ago. Excellent condition, headlights are terrible (will be installing HIDs as on the Audi). Drove it earlier this week, noticed...
  14. Cats friend. how to remove? Bolts, grinder? Only info i can find is on 1.8T motor

    Volkswagen Passat B5 Discussion
    Any one removed a cat from a 99 V6 passat. is it welded on? Bolts? Should i not even bother and just take it to a shop? Money is kinda an issue here, want to get as much of it done my self.
  15. Dealership says my cats are bad, do I take their word for it?

    Volkswagen Passat B5 Discussion
    I've read many people on here get told by the "stealership" that their cats are bad. I took mine in today for them to do some "test" to see if it's bad. They said yes. I've got two codes regarding the cats, P0421 and P0431. They also told me that my software is up to date and that I don't...
  16. Replace 1 or both cats?

    Volkswagen Passat B5 Discussion
    Hi I have a 2002 v6 b5. pass side cat is bad. set of engine light. rattling in cat is loud. since the sub frame needs to be dropped should i do both sides at the same time? Or is it ok to do just one? Also should i go with oem parts or aftermarket? aftermarket is half the price of oem. any help...
  17. Fed warrenty on Cats?

    Volkswagen Passat B5 Discussion
    how many miles are the cats covered? I've been Google but i get difference answers. is it 80k?
  18. changing exhaust cats

    Volkswagen Passat B5 Discussion
    I would like to remove my exhaust system from my 2002 v6 passat and install a new one from the manifold to the muffler. I know this would be custom for the most part. My question is has anyone done this and used high flow cats and still got there car to not through OBD codes and pass emissions...
  19. Cats rattle like box of rocks (V6). What steps to take with SAIP/02/Cat replacement?

    Volkswagen Passat B5 Discussion
    Car: 1998 GLX, 121k miles. I've had a CEL for a couple months, which Advance Auto scanned as a "generic o2/cat fault." Since the car was/is still running fine with no loss in economy, I didn't take any immediate action. I'm hoping for a VAG-Com for Christmas, so until then I'm just sitting...
  20. V6 cats

    Volkswagen Passat B5 Discussion
    I have the 2.8V6 (B5 Passat 2000) with 91k, and I have two codes. P0420 - Catalyst System Efficiency Below Threshold (Bank 1) P0430 - Catalyst System Efficiency Below Threshold (Bank 2) I'm getting these codes at the same time, driving 20-30 miles after cleared the DTC's. I think there is no...
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