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  1. Leaky injector is my guess.

    Leaky injector is my guess.
  2. I am noticing the exact same thing with mine....

    I am noticing the exact same thing with mine. Eventually it will throw a code (but only at idle) about "lambda adaptation exceeded" and/or "O2 muddled" code. I suspect leaky injector, but so far it...
  3. During the cold season here in the Midwest, they...

    During the cold season here in the Midwest, they switch to winter blend type of fuel which has higher content of ethanol and different additives to improve dissipation of bad exhaust gasses better....
  4. For Sale: E90 335i N54 Stock Intercooler - Mint Condition

    I have stock N54 intercooler out of my E90 335i. The intercooler was removed back in 2009 when the car had only 3,500 miles. It has been sitting in dry storage ever since and it is just taking up...
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    For Sale: E90 335i ZHP Full Suspension

    Hey folks,

    I am selling my BMW ZHP suspension from my E90 335i with Sport Package. All suspension components have 35,000 miles on them. Yes, you read this correctly. I have a 2008 335i with little...
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    This depends on state-to-state. In IL you can't...

    This depends on state-to-state. In IL you can't pass unless all the monitors are set. Ask me how I know...

    I am beginning to see more and more cases of 29f4 and 29f5 codes. I usually pass...
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    I think I'll be happy with 21.5 psi for a...

    I think I'll be happy with 21.5 psi for a while...

    Thanks for the feedback guys. I really appreciate it.
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    ...so why can't we just plop the N20 sensor,...

    ...so why can't we just plop the N20 sensor, crank up the boost and adjust the Cobb maps? Is this some sort of an internal MSD80/81 limit that forces us to do boost scaling?
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    Thanks for the response guys. Yeah, "flying...

    Thanks for the response guys. Yeah, "flying blind" is not what I am aiming for. I want full ECU control without any piggybacks. Running upgraded turbos with stock TMAP sensor leaves a bit on the...
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    What's the story on TMAP + COBB

    Hey guys,

    It's been a while since I've dug into this topic and with the N54 platform advancing so much in the recent months, I am completely overwhelmed with info.

    So there was a conversation a...
  11. Impressive indeed! Congrats on the results. Like...

    Impressive indeed! Congrats on the results. Like others said, you have to be pushing more than just 19.5 psi of boost.

    Also, at those power levels, I have to start questioning the longevity of...
  12. Thread: O2 Codes

    by vasillalov
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    815

    You are pretty much describing EVERYTHING that I...

    You are pretty much describing EVERYTHING that I am seeing on my car right now. This mess started when I had to put the BMS dp fix back again in June to pass emissions.
  13. Thread: O2 Codes

    by vasillalov
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    815

    I have been running without DPs for the past 4...

    I have been running without DPs for the past 4 years. That's not the issue. I managed to narrow it down a bit. The car will only throw the code when it idles for a long time (over 2 min) and only...
  14. Thread: O2 Codes

    by vasillalov
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    815

    So the "muddled" code came back up. So did the...

    So the "muddled" code came back up. So did the other two codes as well. At this point I am suspecting damaged O2 sensors.

    Any other ideas about what could possibly be going on? The car barely has...
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    Ooh I see what you meant now. Yeah both injectors...

    Ooh I see what you meant now. Yeah both injectors popped our immediately as the bolt snapped and the hold-down bracket let go.

    More to your point, it is very very common for BMW dealerships to...
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    Good info. Yeah, I am aware of the injector seals...

    Good info. Yeah, I am aware of the injector seals needing replacement. I'll most likely put my brand new injectors in and deal with it later.

    And I agree, I most likely over torqued the bolt. I...
  17. Thread: O2 Codes

    by vasillalov
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    815

    Its impossible to tell which injector is leaking...

    Its impossible to tell which injector is leaking unless it throws a code.
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    Because you can't buy -11 anymore. I had an...

    Because you can't buy -11 anymore. I had an injector bracket hold down bolt snap on me on the track. Injectors 3 and 4 popped out of the head. The PTFE seals on the injector tips have expanded and...
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    Surprise Surprise! New Injectors!

    Hey folks,


    I am sure the vast majority of us are aware that BMW has revised the injectors for our cars a few times. Recently they released what is known as Gen 2 injectors which are supposed to...
  20. Thread: O2 Codes

    by vasillalov
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    815

    UPDATE: The logging did not reveal anything out...

    UPDATE:
    The logging did not reveal anything out of the ordinary. So I took my car to the track, aka "The Proving Ground" :) and after two solid sessions of 20 minutes each I was finally able to...
  21. Thread: O2 Codes

    by vasillalov
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    815

    R.G., Thanks for the info. The little misfires...

    R.G.,

    Thanks for the info. The little misfires are more like a stumble at idle. There are no misfire codes and the car runs perfect above 700 rpm.

    O2 sensor connections seems to be the likely...
  22. Thread: O2 Codes

    by vasillalov
    Replies
    22
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    815

    O2 Codes

    Hey folks,


    I've recently started seeing O2 codes appearing out of nowhere. This is accompanied by somewhat rough idle and a few misfires here and there. There have been zero drivetrain changes...
  23. Hey Tony, Great work! Congratulations on...

    Hey Tony,

    Great work! Congratulations on getting those out and on the outstanding dyno results. Also, congrats on the shotgun HPFP upgrades. Those look impressive indeed.

    I've been out of the...
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    Why am I not surprised...

    Why am I not surprised...
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    Thanks a lot guys! This is very useful. I now...

    Thanks a lot guys! This is very useful. I now realize how little torque is actually needed for the injector hold-down bolts: only 9nm, or basically under 7 ft /lb. No wonder I've been snapping those...
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