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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Thoughts on my V4 Log



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      03-15-2010, 07:20 AM   #1
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Thoughts on my V4 Log

This is a log I took yesterday starting at 3rd. Let me know what You all think and any adjustments you would make. You will notice 3rd gear is a little strange due to traction loss, spun most of the way throgh 3rd.

Car running stage 3+ MT maps on 6AT car with mods in Sig. IC is 100%, UT 100%. Thanks!

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      03-15-2010, 09:52 AM   #2
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from that log everything looks fine, but you should show us can actual advance. showing us ign. cor. doesn't tell us much.
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      03-15-2010, 09:55 AM   #3
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damn you lose traction in thrid I can't break traction in 2nd with these snow tires.
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      03-15-2010, 10:14 AM   #4
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Quote:
Originally Posted by ridin135 View Post
damn you lose traction in thrid I can't break traction in 2nd with these snow tires.
thats a good problem, having little traction in 3rd gear and up is no fun at all, flat out dangerous.
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      03-15-2010, 10:18 AM   #5
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Warning NOOB question ahead:

What exactly are we looking for when looking at these data logs? What do you look to determine that things are going well or not? What is the acceptable range for each of the parameters?
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      03-15-2010, 10:54 AM   #6
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logs look fine, do you notice any difference between the AT and MT specific maps?
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      03-15-2010, 11:28 AM   #7
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Quote:
Originally Posted by jpsimon View Post
from that log everything looks fine, but you should show us can actual advance. showing us ign. cor. doesn't tell us much.
i went back to see if I logged CAN actual advance and I did not I have 3 laptops and the one I used was set up with the channels set up the way Shiv had set up. I will get some more logs this week with the CAN actual advance.
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      03-15-2010, 11:30 AM   #8
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Quote:
Originally Posted by ridin135 View Post
logs look fine, do you notice any difference between the AT and MT specific maps?
I have been running MT maps since I'm not a big fan of how much boost tappers off with the AT maps. I personaly haven't had any issues, but I have heard others have had misfire codes thrown at the top of the RPM band.
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      03-15-2010, 03:53 PM   #9
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Quote:
Originally Posted by BlueLion View Post
Warning NOOB question ahead:

What exactly are we looking for when looking at these data logs? What do you look to determine that things are going well or not? What is the acceptable range for each of the parameters?
Basically ign. advance, throttle closure, and boost stability/response to throttle input; mainly though you need ign advance to check for knock but the OP forgot to post/log that haha..next time i guess.
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      03-15-2010, 04:10 PM   #10
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Do we still need to worry about these things with the Autotune feature Shiv is working on?
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      03-15-2010, 05:21 PM   #11
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Originally Posted by bmwzimmer View Post
Do we still need to worry about these things with the Autotune feature Shiv is working on?
You don't even have to "worry" about these things now unless you want to tune for maximum power. Otherwise, just run the baseline maps with default settings and enjoy. But the autotuning we will be releasing soon will allow you to automatically achieve any level of tune aggression you want and have it dynamically change as conditions (temp, altitude AND octane) change). Then you REALLY don't have to worry about it:

OP- Your logs look fine. But jp is right, you should add some more useful channels to the log such as actual throttle and actual timing.
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      03-16-2010, 06:26 AM   #12
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Quote:
Originally Posted by shiv@vishnu View Post
You don't even have to "worry" about these things now unless you want to tune for maximum power. Otherwise, just run the baseline maps with default settings and enjoy. But the autotuning we will be releasing soon will allow you to automatically achieve any level of tune aggression you want and have it dynamically change as conditions (temp, altitude AND octane) change). Then you REALLY don't have to worry about it:

OP- Your logs look fine. But jp is right, you should add some more useful channels to the log such as actual throttle and actual timing.
thanks, will do, but with auto tune what will I do with all my laptops?...lol
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