Recent content by maupineda

  1. M

    Z4M Monoball RTAB recommendations?

    I have SDW, no issues, have been on the car for 4 years, but only 12k miles. if I was in EU/UK, I'd go Millway. There is really no detriment, even from NVH PoV.
  2. M

    New eventuri carbon airbox with maf

    if you can carry it and install it yourself, just contact Severn tunning and done. is remote tuning and works great.
  3. M

    New eventuri carbon airbox with maf

    looks super patchy, I asked about it in their IG post and they kind of ignored it. at that point, I prefer the Karb OEM Style version.
  4. M

    Thoughts to bring some life to steering

    I have bought a black tag rack, will be interesting to see how that changes feel
  5. M

    Thoughts to bring some life to steering

    My Z4MC has nice and precise steering, you know what is doing not by feel but learning and trusting the car. Is a bit numb off center and it loads up as you throw the car into a corner but feel does not increase. Is the nature of the car.
  6. M

    What did you do to your Z4M today?

    My plenum is an old one, and the filter is not as tight. I have seen some dust particles on the plenum side. That said, if it bows like that could let dust through, unless the unfiltered section had a ledge to push the filter back in place
  7. M

    What did you do to your Z4M today?

    My Karb does not do that.
  8. M

    First Damper / Springs mod question

    I dont think there are off the shelf Koni dampers for the Z4M, at least not the front. I would go B6 dampers and leave ride height alone or it will get crashy very quickly.
  9. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    I think the perspective of giving a blind eye to an issue just because it drives normal is not best, it can be right for you, but that does not make it right from an engineering point of view. The OP asked for input, and I think he got some, I wish someone would have given me this level of...
  10. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    Is 115 bar at operating temp. To adjust the valve you do it at lower oil temps to set it at 115, that said, when hot, if you have lower pressure, adjusting the valve changes nothing as you are not reaching its setpoint. If you want to make sure is working or set correctly, connect the gauge and...
  11. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    I missed one important aspect as your images were not sequential and complete, I missed that the 15 degree deviation was on the leak test, not timing checks. 15 degree deviation is massive and can be several things Low pressure Worn seals Worn solenoid block seats Clogged solenoid block...
  12. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    I had a lot of back and forth with others in the M3 forum about test results, etc. feel free to have a read https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/273361-s54-diaphragm-springs-and-exhaust-hub/page3 but images 5 and 6 of the OP indicate his test is failing.
  13. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    290ms response timing is not a concern, tolerance is up to 500ms. I have a brand new Vanos unit in my Z, and now both sides are within 200ms (except for one cam), when engine is at full temp the numbers improve a bit. Here my test results Results are as follows Camshaft Positioning Advance...
  14. M

    BMW Z4M E86 - S54 marbles in a can type noise - possible Vanos

    your testing report is showing you have a timing issue and is actually ending prematurely. so you need to start there. The noise is indeed not normal, the marbles as you rev the engine and it comes back to idle are normal, but once at idle, it should not sound. Buy the timing tools (genuine)...
  15. M

    Z4MC differential rebuild - Update 9-3-2026

    i rebuilt my unit myself, and is not terrible, just takes time, and you need access to specialty tools such as a hydro press, drill press, huge wrenches, and torque wrenches that can ready as low as 1NM with accuracy. but the satisfaction at tend bits the frustration that happens within.
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