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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning M235 stage 2 bm3 ignition timing correction log

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      05-26-2023, 06:17 PM   #1
Luski
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M235 stage 2 bm3 ignition timing correction log

Hi everyone,

Got vrsf dp, vrsf cp, ptf fmic and one step colder plugs installed this week and went stage 2 bm3 91 octane. My first log (linked below) looked perfect. Yesterday I flashed xhp stage 3, did my 50 miles of break in and then decided to log more today to make sure everything was okay. Now I have a good bit of timing corrections and one of the logs even had low timing on cylinder 3. The logs overall just look worse. Running wawa 93 octane but the 91 map because I was hoping to avoid timing issues. Any help? How do the logs look? Thanks!

First log: https://datazap.me/u/luski/first-log
Logs today:
https://datazap.me/u/luski/second-log
https://datazap.me/u/luski/3rd-log
https://datazap.me/u/luski/fourth-log
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      05-26-2023, 07:14 PM   #2
Luski
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Update: Just did another log in sport not sport+ and auto shifting instead of using the paddles and it looks absolutely perfect. Should I just stay out of sport+? Very confused
https://datazap.me/u/luski/fifth-log?log=0&data=6
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      05-31-2023, 10:57 AM   #3
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the timing corrections don't look bad to be honest. as long as car feels smooth, i would not worry about it.

it is likely due to the rising IAT. if you notice the 'good' logs are lower IAT, whereas the corrections are when your IAT is over 90f
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      05-31-2023, 08:41 PM   #4
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You're using Bootmod3 just post the link to the log itself. You don't need to use datazap..
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      05-31-2023, 09:13 PM   #5
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Quote:
Originally Posted by designatedposter View Post
the timing corrections don't look bad to be honest. as long as car feels smooth, i would not worry about it.

it is likely due to the rising IAT. if you notice the 'good' logs are lower IAT, whereas the corrections are when your IAT is over 90f
Okay awesome, yeah car feels super smooth and power delivery hits hard. Thank you
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      05-31-2023, 09:14 PM   #6
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Quote:
Originally Posted by n55david View Post
You're using Bootmod3 just post the link to the log itself. You don't need to use datazap..
I’ll be honest, that’s what I wanted to do but I couldn’t login to the website to grab the logs and couldn’t find a place in the app to share the log. Would’ve much rather sent it as a bm3 log
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