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  1. #1
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    4th Gear Timing Corrections - PTF E45 Log

    I was able to get a log to see how my car is handling the Florida heat on my PTF E45 map. Third gear looks great but once I get into 4th timing is pulled from all cylinders. I understand that IAT's are getting up to around 120. Is this where the DME proactively begins to pull timing?

    I have only seen logs from 3rd to 4th on the track before and there were quite a few 4th gear corrections then as well. Does anything stand out to you guys or is this normal?

    datalog1.txt
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    known issue cant fix it unless you stack. just live with it for now.

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    actually I just saw your log ... its not as bad as some of us have.

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    I had a feeling that you assumed it was the flatline issue that you have been complaining about for quite some time now.
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
    I had a feeling that you assumed it was the flatline issue that you have been complaining about for quite some time now.
    its still happening right after the shift so it is related. but not too bad.

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    What iat temp is the Dme supposed to pull timing when related to iat temps?
    Titanium Silver E92 09 BMW 335i xdrive 6AT
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    Click here to enlarge Originally Posted by DQE92 Click here to enlarge
    What iat temp is the Dme supposed to pull timing when related to iat temps?
    110F, which is right where the OP started his pull....which is why timing is pulled globally across all cylinders. Damn, that's really hot to start a pull at...what fmic do you have OP?
    [02/07 E92 335i 6MT] - Under Construction

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    Click here to enlarge Originally Posted by nitehawk Click here to enlarge
    110F, which is right where the OP started his pull....which is why timing is pulled globally across all cylinders. Damn, that's really hot to start a pull at...what fmic do you have OP?
    Welcome to Florida man. That's pretty much standard.
    2011 E90 M3 \ Melbourne Rot Metallic

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by DQE92 Click here to enlarge
    What iat temp is the Dme supposed to pull timing when related to iat temps?
    Depends on what his pro tuner changed it to, if he did. On ethanol maps, I don't begin to pull timing until after 150* IAT'S.
    2011 E90 M3 \ Melbourne Rot Metallic

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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    Depends on what his pro tuner changed it to, if he did. On ethanol maps, I don't begin to pull timing until after 150* IAT'S.
    Yeah, 110F is standard in the OTS mapping.
    [02/07 E92 335i 6MT] - Under Construction

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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    Depends on what his pro tuner changed it to, if he did. On ethanol maps, I don't begin to pull timing until after 150* IAT'S.
    Thanks for clarifying.
    Titanium Silver E92 09 BMW 335i xdrive 6AT
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    @dzenno@PTF does this look normal based on what you have seen.
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
    Third gear looks great but once I get into 4th timing is pulled from all cylinders. I understand that IAT's are getting up to around 120. Is this where the DME proactively begins to pull timing?
    Known issue with the 6ATs, especially when running the higher TQ maps (stock turbos with ethanol blends). Do you have the Alpina TCM flash? It helped a lot with my flat line problems
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    Known issue with the 6ATs, especially when running the higher TQ maps (stock turbos with ethanol blends). Do you have the Alpina TCM flash? It helped a lot with my flat line problems
    I do have the Alpina flash.
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    Click here to enlarge Originally Posted by JStang Click here to enlarge
    @dzenno@PTF does this look normal based on what you have seen.
    Yes that is typical post shift behaviour. In fact, yours doesn't have it as bad as some I've seen in the past. In most cases timing corrections are in the 3.x-6.x range post shift here and there. At times, there will be odd cases/cars with a timing correction on one or two cylinders reaching -10.x. Some of our recent updates to VANOS tables do seem to help the situation a bit in those odd -10.x cases but so far given everything I've seen there isn't a single N54 tuning solution that doesn't see post shift timing issues of some sort although some may disagree even with lack of data. Some cars just have it better/worse than others imho
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    Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
    Yes that is typical post shift behaviour. In fact, yours doesn't have it as bad as some I've seen in the past. In most cases timing corrections are in the 3.x-6.x range post shift here and there. At times, there will be odd cases/cars with a timing correction on one or two cylinders reaching -10.x. Some of our recent updates to VANOS tables do seem to help the situation a bit in those odd -10.x cases but so far given everything I've seen there isn't a single N54 tuning solution that doesn't see post shift timing issues of some sort although some may disagree even with lack of data. Some cars just have it better/worse than others imho
    Thanks for the clarification.
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    thats the exact issue i also have. mine is worse though .
    07 335i AT - MOTIV 750 - MHD BMS E85 - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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    @JStang are you IJE0S OR I8A0S?

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    Click here to enlarge Originally Posted by themyst Click here to enlarge
    @JStang are you IJE0S OR I8A0S?
    I8A0S
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    i bog hard into 4th and 5th from time to time. Really annoying at the track.
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    Is it confirmed to happen with MT as well?

    Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
    Yes that is typical post shift behaviour. In fact, yours doesn't have it as bad as some I've seen in the past. In most cases timing corrections are in the 3.x-6.x range post shift here and there. At times, there will be odd cases/cars with a timing correction on one or two cylinders reaching -10.x. Some of our recent updates to VANOS tables do seem to help the situation a bit in those odd -10.x cases but so far given everything I've seen there isn't a single N54 tuning solution that doesn't see post shift timing issues of some sort although some may disagree even with lack of data. Some cars just have it better/worse than others imho

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