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  1. 318i pre cat sensor no volts

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hell guys, I am facing horrible issue I measured my o2 sensors (car has only 2pcs) with ELM 327 scanner and pre cat o2 sensor was showing 0 volts no movement at all. So I thought it is faulty I replaced it with new one but ELM still shows 0 volts, I do not know what to do I think I will ring...
  2. 2008 520d N47 DPF / CAT Info

    BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi Guys, I know there have been various threads on deleting DPFs etc but I was hoping for some general info on the subject to clear up a bit of confusion on my part. I have been contemplating a DPF delete on my E61 LCi 520d N47 in the interests of seeking better mpg and reducing possible...
  3. Possible CAT issue?

    BMW 1 Series - Tech Talk For All Gen Of 1 Series
    Dear All, I have bought an E87 on the previous summer, everything went smooth, but right now I have a "small" issue. After random distances the check engine light come out. I have went to my mechanic and we checked the code, it is "P00BD", but sometimes I get also "P0172 - System Too Rich". He...
  4. Cat Converter

    E90
    Can anyone tell me what would be the best make of converter for a BMW petrol 2.0l 2008 E90 125kw . I was thinking Bosal Catalytic converter. 2 year warranty. Hopefully comes with all the bits and pieces required to fit to existing system. Thanks
  5. Race cat + eisenmann race

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Moved supersprint position a bit a again Added Magnaflow race cat too Enjoy. Btw gearbox is fine it's LSD with very tall final drive :))) https://youtu.be/pzJN21iRM78 Sent from my SM-G960F using Tapatalk
  6. M5 F10 Cat Fault

    BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi, New to the forum so please forgive me going on a bit. 1 month ago I bought my dream Beamer, 2103 M5 F10. The dream has been a bit of a nightmare. Just had to replace 1-4 injectors, and spark plugs due to over fuelling and major misfire issue leading to breakdown and recovery. Previous owner...
  7. e46 pre cat de-cat questions

    BMW 3 Series Forum - Technical Talk on the BMW E46
    hi, my front cat flexi failed a while ago, now mot date pressures me to sort it out. There is a clamp on flexi repair kit on ebay, i used a repair kit before from there but that was a welding job. i just can't see how the flexi's clamps would fit in there behind the heat shields and sump...
  8. 320d pre cat repair kit from bmw

    BMW 3 Series Forum - Technical Talk on the BMW E46
    hi i have my 320d's flexi pipe failed. ebay sells cheap flexis for it, but they require welding, i had one done on my 318d it was vibrating at a certain rev. Bmw also selling a repair kit part no. 18312356512 anyone seen this before? i know that almost every exhaust upgrade for new bmw's are...
  9. carbon in cat

    BMW 3 Series - Tech Talk For All Gen Of 3 Series
    2010 320i msport petrol engine can some body please explain to me when and how the carbon build up in the cat gets cleaned/burnt away ? is it more or less the same way as explained in the dpf sticky above ? or is the petrol engine cat cleaned in a different way reason is i had an engine light...
  10. secondary cat delete

    BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Has anybody removed their secondary nox catalystic convertors on a bmw e90 n53 engine? 330i or 325i.. if so did you have to code anything out? been looking through threads and see US guys do this a lot but nothing from the UK..and i know our system is different to theirs in terms of sensors..
  11. oucan i remove the cat from the turbo to replace the flexi. I do hsve some me

    Introductions
    We have a blow out on the flexi on our 118D edition N47 can i remove the cat from the turbo to replace the flexi. I do have some mechanical experience although it will be done on the drive under a tarp. ?
  12. FS: BMW 3 Series E46 Cat Back Exhaust System - TMS Motorsport

    TMS Motorsport
    More great items brought to you by: THE MOFF SHOP / TMS MOTORSPORT FS: BMW 3 Series E46 Cat Back Exhaust System Manufactured from high quality grade T304 mandrel bent stainless steel. Fully polished and ported for maximum performance. Direct bolt-on...
  13. 850csi cat replacement?

    BMW 8 Series Forum - Technical Talk on the BMW E31
    My car is always marginal on emissions come MOT time. I'm looking at what I can do to get I through another MOT. I get the car nice and hot but it was tested on a smog machine and we couldn't get it to comply. The MOT guy said the CATs could be shot, how do we check this and if so what are...
  14. E91 335i N55 decat/sport cat advice

    BMW 3 Series - Tech Talk For All Gen Of 3 Series
    I recently purchased a 2010 E91 335i LCI sport manual touring with the N55 engine. It's previously been to Birds Auto for a B3 conversion, quaife, bilstein suspension, arbs and a tune. I've been told by birds that this is an "additional ECU" as they could not map the N55 ecu at the time. I was...
  15. 320i Pre Cat O2 sensor part numbers

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Good afternoon, I need some help here, I’m looking for the Bosch part numbers for 2004 320i O2 Pre cat sensors I’ve looked on realoem and it claims the leads are 1 metre long. That can’t be right Thanks
  16. FS: BMW 3 Series E46 Cat Back Exhaust System - TMS Motorsport

    TMS Motorsport
    More great items brought to you by: THE MOFF SHOP / TMS MOTORSPORT FS: BMW 3 Series E46 Cat Back Exhaust System Manufactured from high quality grade T304 mandrel bent stainless steel. Fully polished and ported for maximum performance. Direct bolt-on...
  17. FS: BMW 3 Series E46 Cat Back Exhaust System - TMS Motorsport

    TMS Motorsport
    More great items brought to you by: THE MOFF SHOP / TMS MOTORSPORT] FS: BMW 3 Series E46 Cat Back Exhaust System Manufactured from high quality grade T304 mandrel bent stainless steel. Fully polished and ported for maximum performance. Direct bolt-on...
  18. FS: BMW 5 Series E60 E61 530d 03-10 Cat back Exhaust System - TMS Motorsport

    TMS Motorsport
    More great items brought to you by: THE MOFF SHOP / TMS MOTORSPORT] FS: BMW 5 Series E60 E61 530d 03-10 Cat back Exhaust System Manufactured from high quality T304 grade stainless steel. Mandrel bent and fully TIG welded for strength and durability...
  19. 318i N46B20 Manifold swap for non cat version, Any gains???

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi everyone, ive been reading up alot on american e46 sites and they are recommendng buying some cheap ebay headers (manifold) because they give a good gain in performance. my car is running the manifold with cats in atm. im thinking about buying a 2nd hand original 318i manifold without the...
  20. FS: BMW 3 Series E46 Cat Back Exhaust System - TMS Motorsport

    TMS Motorsport
    More great items brought to you by: THE MOFF SHOP / TMS MOTORSPORT] FS: BMW 3 Series E46 Cat Back Exhaust System Manufactured from high quality grade T304 mandrel bent stainless steel. Fully polished and ported for maximum performance. Direct bolt-on...
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