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Help me read my Cobb log...
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09-19-2012, 09:06 AM | #1 |
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Help me read my Cobb log...
So I think I sort of understand how this works....
Below is a view and the csv file (rename from .txt) of a pull for my car (2007 335i, auto, running stage 1 sport map). I logged from a stop all the way through the shift to fourth (since I haven't yet been very good at getting a single-gear pull). DTC/DSC completely turned off. Not sure if the auto shifting has anything to do with it, but I'm trying to figure out if the TPS closure is normal or an issue. Doesn't hapen all the time, last time it did it between 1-2 but not from 2-3. Is it an overboost issue? If so, what should/can I do? I don't think the timing corrections are an issue - this is the first time I've seen 3 cylinders in one log, usually it's none or maybe 1. Am I reading that right? Any thoughts/suggestions appreciated. A.
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09-19-2012, 09:32 AM | #2 |
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you have no throttle closures. looks fine to me.
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07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - 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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09-19-2012, 09:44 AM | #3 |
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OK....I am misreading it then. Looked back at the "Datalogging with Cobb" thread that showed me the basics...now realize the examle he has of the TPS closure is mid-pull. Are those dips I see in TPS where the shift is occuring, and I'm seeing it becausse I'm logging across gear shifts? I think that's a "palm-meets-forehead d'uh!" moment.
But if that's it, why didn't I see it in a couple other logs on the shifts from 2-3? On those, TPS stayed pretty much flat. thanks! I am planning to live with sport for a little while then go to aggressive....
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2007 E93 N54 Last edited by andrew_b; 09-19-2012 at 09:49 AM.. |
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09-19-2012, 09:56 AM | #4 |
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i have some Throttle closure during shift as well , those are more pronounced on low gears . as long as it does not close during the pull is fine.
if you have good 93 octane gas try the aggressive. there is an excel done by zasquatches which is better to open logs. there is a thread around.
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07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - 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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09-19-2012, 10:04 AM | #5 | |
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And I did see the thread with the excel template, will try it (but must say the virtualdyno was really easy).
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09-19-2012, 10:08 AM | #6 | |
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As far as the throttle closures enrita has hit the nail on the head. |
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09-19-2012, 10:15 AM | #7 | |
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I have to say, this is the most fun I've had with a car in a long, long time (probably since high school/early college when I had a '78 Camaro)
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