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Old 07-18-2012, 10:27 AM   #1
vonBiz
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Default 2nd and 3rd gear pull log review

Just did my first log runs last night, was wondering if someone who knew more than myself (which is nothing when it comes to tuning, complete noob here) could take a look at these and offer some feedback.

I think i did the runs right, had to back off a tad early on the 3rd gear pull but hopefully enough info here.

2nd Gear
https://docs.google.com/spreadsheet/...kYyYndiWktKRVE

3rd Gear
https://docs.google.com/spreadsheet/...XpIT0o0TGZDRkE

Cobb stage 2 with down pipe, going to install AEM cold air later with updated map and wanted to make sure everything was good.

thanks
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Last edited by vonBiz; 07-18-2012 at 10:33 AM.
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Old 07-18-2012, 11:50 AM   #2
projectQWKSLVR
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I am no expert, but these 2 logs are almost useless. There isn't much to learn from a 2nd gear pull, you can not put enough load on the car. In the 3rd gear log, you were only under WOT (wide open throttle) for about 2k rpms.

Find a SAFE place were you can make a good 3rd gear log. You want to start your pull around 2,000 rpms @ WOT and hold it to redline or damn close to it. This is the only way to get sufficient feedback from a data log.

Hope this helps. Happy and safe motoring.

-Glenn
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Old 07-18-2012, 01:18 PM   #3
vonBiz
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Good info, i wasn't sure about going WOT right off the bat or not. will re-do the 3rd gear pull tonight on a better stretch of road.

thanks
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Old 07-19-2012, 09:42 AM   #4
vonBiz
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Updated log 3rd gear pull, any input on how this looks would be appreciated.

stage 2 93+ with AEM cold air map

https://docs.google.com/spreadsheet/...EFmUDlIM2dvZGc


thanks
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Old 07-20-2012, 03:58 AM   #5
WRX_20II
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There is some feedback knock but its at the start of your run which is likely noise and normal. I'm sure Bill will chime in shortly to verify all is well.
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Old 07-20-2012, 08:36 AM   #6
Cobb Tuning
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Quote:
Originally Posted by vonBiz View Post
Updated log 3rd gear pull, any input on how this looks would be appreciated.

stage 2 93+ with AEM cold air map

https://docs.google.com/spreadsheet/...EFmUDlIM2dvZGc


thanks
Log looks good. The single count of feedback knock correction when mashing the throttle is normal noise.

I would keep an eye on A/F Learning 1 A, B, C, D parameters (long-term fuel trims). One of your trims is borderline extreme which could indicate an issue such as a boost leak. I would take a look at these values via live data function over time and see if they get much worse. If you start to see any one of them outside of +/- 8%, then you might have an issue.

Bill
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Old 07-20-2012, 10:28 AM   #7
vonBiz
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Thanks Bill, could the A/F Learning parameters be putting out skewed data due to the fact this run was done shortly after a re-flash?
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Old 07-20-2012, 12:04 PM   #8
Cobb Tuning
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Quote:
Originally Posted by vonBiz View Post
Thanks Bill, could the A/F Learning parameters be putting out skewed data due to the fact this run was done shortly after a re-flash?
A reflash will clear the long-term fuel trims (and the other learned parameters), so they are more likely to be closer to zero after a reflash. Give it a tank of gas and see where they are at.

Bill
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