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  1. BMW ECU Tuning and Standalone Tuning
    hi , I am currently make a downpipe for my 07 535d ,to save time I would make the sensor bosses before I remove the dpf ,if any one can help with the thread sizes it would be a great help ,I believe they are 1 x m18 X 1.25 pitch, and 2 x m12 x 1.25 pitch thanks
  2. BMW 8 Series Forum - Technical Talk on the BMW E31
    My 840ci has a occasional rattle in one of the cats (one was replaced by previous owner). Can I do a decat on one side by just gutting the innards of the cat and leave the other side alone??
  3. BMW Tuning Forum
    Anybody know where I can get a decat pipe from for my e90? I have the m47n2 engine with a CAT instead of DPF.
  4. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi can anybody give me some advise please Im thinking of decating my BMW but the thought of my EML coming on and runing in limp mode is putting me off the idea if I decide to decat will the EML light come on or is it just best to go cat back exhaust thanks (I also have two o2 sensors pre cat...
  5. BMW Tuning Forum
    Hi can anybody give me some advise please Im thinking of decating my BMW but the thought of my EML coming on and runing in limp mode is putting me off the idea if I decide to decat will the EML light come on or is it just best to go cat back exhaust thanks (I also have two o2 sensors pre cat...
  6. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi, I'm looking for some advice regarding Remapping my car. It's a 2001/51 BMW 530D Sport Auto. I've owned the car from day 1 and it's completely standard. Recently I have purchased the following; - S/S Decat Pipe - EGR removal Kit (Bimmertune) - Pipercross Panel filter - Vortex breather...
  7. General BMW Discussions
    Hi guys, I've got an 04' 330CD that I'm looking to get an ecotune decat downpipe for. My Qquestion is this: I've heard numerous people say it's hidden by a tray so MOT won't pick it up.. Will it pass an MOT without a CAT? Are there any other downsides I need to be careful of? All the best...
  8. BMW 3 Series Forum - Technical Talk on the BMW E46
    hi guys havent posted for a while as i sadly write my car off boo hoo im interested in buying a 330d auto 2004 one thing the seller has mentioned is since he has fitted a decat stationary with the window down you can smell fumes any ideas what would cause this or is it normal after a decat...
  9. BMW 3 Series Forum - Technical Talk on the BMW E46
    hi guys i need your opinion on this as i have a 2000 bmw 320d 136bhp and with a common problem delay response and sluggish power I'm thinking now if the decat or remap will solve this problem, me and my friend tried everything to cure this problem we replace the egr, maf sensor, map sensor...
  10. BMW 3 Series Forum - Technical Talk on the BMW E46
    I want to decat my 330D and i want to know if there are any downsides to emptying the stock cat vs getting a proper downpipe. The reason is that a downpipe costs hella much, emptying the cat is free :D What is your opinion?
  11. BMW Tuning Forum
    After stripping the car down today i could not get to the bolts properly i loosend the bolts to the turbo to see if it could help which it nvr and not only that the bolts wont go in properly and is now seperated a small but from the manifold causing big leak if exhaust gas looks as if im gunna...
  12. BMW 3 Series Forum - Technical Talk on the BMW E46
    Just bought a E46 M3 and it came with decat pipes do these look right?? ive looked on the interweb and they look deferent to the pic of e46 pipes on there help please
  13. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey guys, I was just wondering if there would be any issue with decatting the exhaust? (I know about the MOT and it failing but I know people who won't fail it on that) Also i'm thinking about getting the exhaust modified is there anything i need to look out for? What I'm playing to do is...
  14. General BMW Discussions
    Fitted my decat pipe today, after nearly an hour of measing around the cat to get it out and striping half the thread on the lambda sensor i got it all back together and the results as far as i can see are: A louder whistle from the turbo And thats your lot! Lol maybe minor diffrences but none...
  15. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Im thinking of removing my car straight after the turbo, whats the pros and cons of this? What sound diffrence will it make? Any gains in power? Mpg life of the turbo?
  16. BMW Tuning Forum
    Hey ppl I decatted my 91 325i non vanos a while back and it went well sound good, now especially on cold or start up the car seems to pull back as if im running out of petrol kind of holding back stuttering, the 1 thing I did notice is the garage that decatted it used a single pipe which I...
  17. BMW Tuning Forum
    Hello, I have a slightly dumb question. Im thining about decating my e46 318d (2.0 85kw), is there 2 catalytics? And should I remove them both for maximum free flow? Ive searched everywhere but havent got my answer I mean, should I remove both, the one on the engine side, and the second in the...
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