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  1. E39 (1997 - 2003)
    so I've been on my adventure to turn the M54 into a tank in terms of reliability by lowering operating temp lower bar coolant cap and m50 intake manifold for easy access underneath. my question is how can i connect the pipe from the m56 valve cover to the m50 manifold. I should i drill a big...
  2. E39 (1997 - 2003)
    So I just kinda sort of, not really, but almost finished swapping my oem intake manifold to the m50 intake manifold. Like I have it running and driving. Now my question is, why when I step on the gas pedal to accelerate, the car kinda bogs, hiccups, and burps then it goes. I have to step on and...
  3. E46 (1999 - 2006)
    M54b30 (E36 Compact) Hey, I've had a problem with my battery bracket that recently led to the battery slamming into the DISA valve, partially unplugging it and causing my engine management to freak out, this happened twice whilst I was driving, I made it home, repaired the bracket and plugged...
  4. E39 (1997 - 2003)
    i deleted the resonator now it is loud but i wanted to see what you guys think about leaving the y resonator off and putting the stock muffler back on? or removing the other resonator also farther up front and leave the stock muffler, it is loud to the point i feel it is obnoxious.
  5. E60 / E61 (2004 - 2010)
    I know BMW says use 5w30. But I have seen videos online saying to actually go with 10w40. any advice or insight is greatly appreciated!
  6. E39 (1997 - 2003)
    Hello all, I'm here to ask for a little bit of help. For future reference, I've got an m54b30 engine in my e39 which came with the m52b28tu, so I have the Intake manifold from the 2.8 on the 3.0, but that's the only big difference from the m54 that's in the e46 and my e39. I'm running into an...
  7. E39 (1997 - 2003)
    why does this happen?
  8. E46 (1999 - 2006)
    I've fixed my cooling issue. I was on my way home from work today and all of a sudden my traction control light started to blink doing 80. Didn't actually lose traction and it killed my cruise control. I'm wanting to say it is something to do with the transmission or am I mistaken.
  9. General BMW Questions
    I own a 2004 bmw 530i (e60) with the beloved m54 engine. I occasionally get a “low oil pressure” warning. Have taken it to a specialized bmw mechanic a few times but the warning keeps popping up. If anyone has any suggestions on what might be causing this, the help would be greatly appreciated...
  10. E46 (1999 - 2006)
    Hi Everyone, I posted this in the e85 section but also posting here as chances are e46 owners wont be looking at e85 sections lol. Hopefully thats allowed Just posting here to see if there's any interest in a G power supercharger kit for e46s (and e85s) , both m54 and s54. G power have agreed...
  11. E85 / E86 Z4 (2003-2008)
    Hi Everyone, Just posting here to see if there's any interest in a G power supercharger kit for e85s, both m54 and s54. G power have agreed to give massive discounts for a couple of their kits. Including the s54 475gp kit, and the m54 300hp kit. If you are interested in supercharging but...
  12. E39 (1997 - 2003)
    Hello guys, I'm new here. So, the car is a 2001 525i with M54B25 engine with ~115k km on the clock. The car runs great until a couple of months ago. Living in a tropical country means I encounter lot of heavy rain--I mean really heavy even the rain droplets are thick enough to make you think...
  13. Do-It-Yourself H.Q.
    I had a broken guide on my m54b30 upper chain tensioner (the one on the cam to cam chain). I bought a used one online that looked perfect, but the actual plastic guide that makes contact with the chain was subtly different and unusable. Can anyone identify which model this part is for? Here is...
  14. E46 (1999 - 2006)
    This is my first post, i have an 2004 525i with the m54 and want to do the pcv delete with a catch can, i know your supposed to block off the dipstick vent tube, but would it be possible to put a valve on the catchcan drain and route it to the vent tube so i can drain when necessary? would this...
  15. E60 / E61 (2004 - 2010)
    This is my first post, i have an 2004 525i with the m54 and want to do the pcv delete with a catch can, i know your supposed to block off the dipstick vent tube, but would it be possible to put a valve on the catchcan drain and route it to the vent tube so i can drain when necessary? would this...
  16. E60 / E61 (2004 - 2010)
    Hi, I'm feeling really stupid at this point, but I'm getting error 009C54 in Carly, which indicates that the AUC sensor needs replacement, but I can't locate the sensor. So I ordered AUC sensor 693305201 and replaced this. This one was located directly near the hood lock if you know what I...
  17. E39 (1997 - 2003)
    Hello forum, so my e39 525i has been sitting a couple days, I go to start it this morning, it started but the idle was very rough, my gas light was on and I haven’t driven it in days so I figured it just low on fuel, about 30 seconds into idling it throw a check engine light at at me, I panic...
  18. X5 E53 (1999 - 2006)
    I have a 2002 3.0, with 240K on it. This saga started after a cocktail or two, maybe. I had a 1/3 tank of gas and I added about a half can of seafoam to the gas, which was most likely 93 octane with ethanol. I was down to about an 1/4 tank or 100 miles and I was hammering on the throttle. At...
  19. E39 (1997 - 2003)
    hi everyone. first time poster here looking at a great diagram i found online, the connector comes out of roughly the circled area however this diagram doesn't account for the cable in question I was removing the intake manifold and upon re installation I came across this plug that I can't find...
  20. X3 E83 (2004 - 2010)
    Hello all (please read) Our story begins 5 months ago when i bought my X3 3.0 Xdrive (M54) for $2500. I knew it had a bad CSB and u joint but the engine ran great aside from EVAP codes and lean bank codes (vacuum leaks that were soon fixed). I replaced the staked in ujoint, CSB, and guibo for a...
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