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      05-30-2020, 08:38 PM   #5
x35250
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Drives: 2013 BMW M5, Monte Carlo Blue
Join Date: Jan 2020
Location: NoVa

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Posted in another forum but repeating here since I started the thread.


Got the spreadsheets to download using a computer instead of my phone. I formatted them to keep the column labels frozen and also highlighted in yellow where the accelerator pedal was 100% (WOT).

This is the STOCK map on Efficient and there seem to be some red flags.

(1) A couple knock events during WOT. Could these may be false knock based on the short duration and inconsistent occurrences?

(2) High boost target and pressure. Why is the DME targeting boost pressure in the 28+ psi range in some cases while the pre-throttle boost often hits 26+ psi? This seems really abnormal for a stock car with the only mod being a Meisterschaft catback exhaust unless the readings are wrong. I thought the stock max boost is 22 psi or so...

[Update: I believe you subtract 14.7 (standard atmospheric pressure) from the datalog boost pressure numbers. 30 psi Boost (Pre-Throttle) is really only about 15.3 psi of boost.]

(3) WDC occasionally gets maxed out at 100%. Not much overhead.

(4) The car is pretty lean at WOT. AFR is around 14.7 in most cases, but ranges between 13-16 across these five datalogs.

Here are the logs. My car is has the DCT transmission so I ran the logs mostly in 4th gear. See if you can spot any other issues.

https://drive.google.com/file/d/1q_j...w?usp=drivesdk

https://drive.google.com/file/d/1nEE...w?usp=drivesdk

https://drive.google.com/file/d/1ifP...w?usp=drivesdk

https://drive.google.com/file/d/1KPC...w?usp=drivesdk

https://drive.google.com/file/d/1iXM...w?usp=drivesdk
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