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  • N54: New Motor + PTF tune = Can't resolve missfire and timing drop issue. (Experts needed)

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    1. 04-08-2016, 01:44 PM #76
      TwistedTuning
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      Click here to enlarge Originally Posted by Artsoasis Click here to enlarge
      I did some more testing and Shifting before 6500 = no misfire. I did 3 perfect pulls and no misfire detected.
      Shifting before 6500 = no misfire Public
      As soon as I shift at anything above 6500 I will get a cylinder 6 misfire and a torque limiter 4. I have also looked at 8 of my other logs and they also show misfire as soon as I go over 6500 rpms and shift.
      Misfire above 6500 rpms Public

      Misfire is 100% shift and RPM related.
      where's you rev limiters set set at? ceiling and floor
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    2. 04-08-2016, 01:54 PM #77
      Artsoasis
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      Click here to enlarge Originally Posted by jyamona@motiv Click here to enlarge
      What happens if you run like 10psi and low timing, and then try and reproduce the issue?
      No issue when using lower boost.
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    3. 04-08-2016, 02:50 PM #78
      Terry@BMS
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      Click here to enlarge Originally Posted by Artsoasis Click here to enlarge
      I did some more testing and Shifting before 6500 = no misfire. .
      That sounds like problem solved to me. Lower the rev limiter to 6500. Click here to enlarge
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    4. 04-08-2016, 03:01 PM #79
      Artsoasis
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      lol, worst case scenario. That will be my fix lol. Going to loosen these bolts and then disable misfire for a log. Hopefully Tony covers me lol
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    5. 04-08-2016, 11:49 PM #80
      Artsoasis
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      1 out of 1 members liked this post. Yes Reputation No
      Well it wasnt the bolts. Replacing every single injector like tony had mentioned.
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    6. 04-12-2016, 03:44 AM #81
      Artsoasis
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      2 out of 2 members liked this post. Yes Reputation No
      Issue resolved!

      Race vs a gen 2 AA stage 2 e92 m3. He had a bout 35k in mods in the car.

      I had a 200+ lb passenger and all kinds of stuff in my trunk.
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    7. 04-12-2016, 08:56 AM #82
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      Stucks
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      awesome! lol
      2008 e92 335i
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    8. 04-12-2016, 09:34 AM #83
      Weehe
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      Click here to enlarge Originally Posted by Artsoasis Click here to enlarge
      Issue resolved!

      Race vs a gen 2 AA stage 2 e92 m3. He had a bout 35k in mods in the car.

      I had a 200+ lb passenger and all kinds of stuff in my trunk.
      https://youtu.be/CjtNmVOlk5U
      So how did you fix it?
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    9. 04-12-2016, 09:36 AM #84
      Artsoasis
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      I shift around 6600 rpms or so.
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    10. 04-12-2016, 09:37 AM #85
      jyamona
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      1 out of 1 members liked this post. Yes Reputation No
      Click here to enlarge Originally Posted by Artsoasis Click here to enlarge
      I shift around 6600 rpms or so.
      That isn't a fix lol
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    11. 04-12-2016, 10:12 AM #86
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      bigdnno98
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      Click here to enlarge Originally Posted by jyamona@motiv Click here to enlarge
      That isn't a fix lol
      LOL
      2016 340xi AT
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    12. 04-12-2016, 12:08 PM #87
      Artsoasis
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      Click here to enlarge Originally Posted by jyamona@motiv Click here to enlarge
      That isn't a fix lol
      lol, it works for now. It's might be the flywheel from the Z4 causing the issue. The misfire didn't happen a single time last night and I felt like I was shifting well above 6600 racing a heavily modded 600cc bike.
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