Cobb Stage 1 Sport just installed. Help with data logs - BMW 3-Series (E90 E92) Forum

Jonjt · 01-31-2013, 01:05 AM

Hi everyone,
I just installed the Cobb stage 1 sport map on my car. Went out for a drive, just to make sure car ran fine. I enabled data logging but, didn't perform a proper 3rd gear pull. However, some of the values I logged bother me. I will do a proper run but, I want you guys to take a look at my data, just to make sure everything is ok. I don't want to go do a WOT pull and damage something.

The graphs are attached. A few things I noticed.

~20 PSI boost spikes. I have not seen such high boost spikes on anyone's timing graphs. Is this something unexpected, considering that I logged during normal driving, instead of a staged pull?

At times, there is a huge discrepancy between the requested load and actual load. Any insights?

Timing corrections, I assume they are in degrees? It looks like the DME is pulling a few degrees of timing at WOT. Is that more so than expected?

Cylinder 1 timing is all over the place. What's with the severely retarded timings? Anything less than 0 implies spark after TDC. Engine braking, perhaps?

The car FEELS good and there are no codes. What do you guys think? Should I just go out and do a proper 3rd gear pull now and, not worry about the weird data here?

Thanks

themyst · 01-31-2013, 01:08 AM

Holy scaling fail batman.

Rescale a WOT pull in 3rd gear from 3000 RPM to redline with a shift into 4th and repost.

skatenc123 · 01-31-2013, 01:38 AM

what in the actual fuck

135Pats · 01-31-2013, 10:00 AM

Obviously the scale is totally off there, but regardles, a datalog is generally only useful if it's a WOT pull from about 2.5K to at least 6K revs. Just cruising around you'll see timing corrections, which is totally normal.

E92mech · 01-31-2013, 10:06 AM

Some people say there are lies, damn lies, and statistics, but with data scaled and formatted this way, it's just a straight up fail.

enrita · 01-31-2013, 10:20 AM

lol

Joshboody · 01-31-2013, 10:47 AM

22,756sec of data... very thorough, catching every possible driving scenario.

Jonjt · 01-31-2013, 04:54 PM

Quote:

Originally Posted by themyst

Holy scaling fail batman.

Rescale a WOT pull in 3rd gear from 3000 RPM to redline with a shift into 4th and repost.

Meh, only two data sets were scaled.

The idea here was to see if it's safe to even do a 3rd gear WOT run, considering the 20PSI boost spikes.

JStang · 01-31-2013, 05:03 PM

Quote:

Originally Posted by Jonjt

Meh, only two data sets were scaled.

The idea here was to see if it's safe to even do a 3rd gear WOT run, considering the 20PSI boost spikes.

You're fine.

enrita · 01-31-2013, 06:23 PM

boost spikes are perfectly normal on gear change. Just do a 3rd-4th gear WOT and datalog it with the std parameters. attach the file renamed as txt if you dont know how to plot it.

Greatdane84 · 01-31-2013, 10:45 PM

WOT means what...

Greatdane84 · 01-31-2013, 10:46 PM

WOT means what...

135Pats · 01-31-2013, 11:19 PM

wide open throttle

cbad335 · 02-01-2013, 12:13 AM

Do a proper 3rd gear pull. And make sure to disable traction control so you don't get throttle closure. Also, let us know what fuel you are running.

Jonjt · 02-06-2013, 11:27 PM

I've been traveling so, I finally got the chance to do a 3rd gear pull, yesterday. I'm not sure what values you need to look at so, I've attached the csv file, renamed with a .txt extension.

The car had Sunoco 93 with 10% ethanol blend in it when these logs were taken.

Thanks.

Ænema · 02-06-2013, 11:46 PM

Quote:

Originally Posted by Jonjt

I've been traveling so, I finally got the chance to do a 3rd gear pull, yesterday. I'm not sure what values you need to look at so, I've attached the csv file, renamed with a .txt extension.

The car had Sunoco 93 with 10% ethanol blend in it when these logs were taken.

Thanks.

Reset your datalog list to the default channels. That will really give a lot better picture of what's going on.

With that said, the timing corrections and the important stuff(what's there atleast) looks ok.

Jonjt · 02-07-2013, 07:19 AM

Quote:

Originally Posted by Ænema

Reset your datalog list to the default channels. That will really give a lot better picture of what's going on.

With that said, the timing corrections and the important stuff(what's there atleast) looks ok.

Alright. will do, thank you.

01-31-2013, 01:05 AM	#1
Jonjt Second Lieutenant Drives: 09 E92 335i M-sport Join Date: May 2012 Location: USA Posts: 292 iTrader: (0)	Cobb Stage 1 Sport just installed. Help with data logs Hi everyone, I just installed the Cobb stage 1 sport map on my car. Went out for a drive, just to make sure car ran fine. I enabled data logging but, didn't perform a proper 3rd gear pull. However, some of the values I logged bother me. I will do a proper run but, I want you guys to take a look at my data, just to make sure everything is ok. I don't want to go do a WOT pull and damage something. The graphs are attached. A few things I noticed. ~20 PSI boost spikes. I have not seen such high boost spikes on anyone's timing graphs. Is this something unexpected, considering that I logged during normal driving, instead of a staged pull? At times, there is a huge discrepancy between the requested load and actual load. Any insights? Timing corrections, I assume they are in degrees? It looks like the DME is pulling a few degrees of timing at WOT. Is that more so than expected? Cylinder 1 timing is all over the place. What's with the severely retarded timings? Anything less than 0 implies spark after TDC. Engine braking, perhaps? The car FEELS good and there are no codes. What do you guys think? Should I just go out and do a proper 3rd gear pull now and, not worry about the weird data here? Thanks Attached Images
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01-31-2013, 01:08 AM	#2
themyst Major General Drives: E90 335i LCI Join Date: Feb 2009 Location: NYC Posts: 6,334 iTrader: (8)	Holy scaling fail batman. Rescale a WOT pull in 3rd gear from 3000 RPM to redline with a shift into 4th and repost. __________________ E90 LCI N54 6AT

01-31-2013, 10:00 AM	#4
135Pats Gooby Pls. Drives: 135i Join Date: May 2012 Location: Maryland Posts: 1,612 iTrader: (0)	Obviously the scale is totally off there, but regardles, a datalog is generally only useful if it's a WOT pull from about 2.5K to at least 6K revs. Just cruising around you'll see timing corrections, which is totally normal. __________________ E88 FBO N54 Alpinweiss/Coral Red/Meisterschaft Race/Berk Resonated/Macht Schnell 3"/ER CP/Synapse/VRSF FMIC/BMS DCI/BMS Thermostat Delete/Rob Beck PCV/BMS OCC/Cobb 4.02/Alpina TCU Flash/Icarbon/3D Design/Cyba

01-31-2013, 10:20 AM	#6
enrita Major General Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden Posts: 6,858 iTrader: (0)	lol __________________ 07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 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 - Level 10 AT upgrade - Alpina AT Flash

01-31-2013, 06:23 PM	#10
enrita Major General Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden Posts: 6,858 iTrader: (0)	boost spikes are perfectly normal on gear change. Just do a 3rd-4th gear WOT and datalog it with the std parameters. attach the file renamed as txt if you dont know how to plot it. __________________ 07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 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 - Level 10 AT upgrade - Alpina AT Flash

01-31-2013, 01:38 AM	#3
skatenc123 Lieutenant Drives: 2007 335i coupe Join Date: Jan 2012 Location: NC Posts: 538 iTrader: (1)	what in the actual fuck

01-31-2013, 10:06 AM	#5
E92mech E92 Drives: 2010 E92 Le Mans M-Sport Join Date: Feb 2012 Location: Maryland Posts: 83 iTrader: (0)	Some people say there are lies, damn lies, and statistics, but with data scaled and formatted this way, it's just a straight up fail.

01-31-2013, 10:47 AM	#7
Joshboody Lieutenant Colonel Drives: 2008 BMW 335i E90 6MT v5 Join Date: Jul 2009 Location: Phoenix, AZ Posts: 1,547 iTrader: (7)	22,756sec of data... very thorough, catching every possible driving scenario.

01-31-2013, 10:45 PM	#11
Greatdane84 Private First Class Drives: 335i e90 LCI Join Date: Jan 2013 Location: SW Florida Posts: 184 iTrader: (1) Garage List 2009 335i [5.00]	WOT means what... __________________ [font="Comic Sans MS"]e90 LCI Cobb: Stg1 +FMIC Aggressive ST VRSF 7" FMIC - Next To Do: White Rings "If you're not 1st, you're last" -Ricky Bobby

01-31-2013, 10:46 PM	#12
Greatdane84 Private First Class Drives: 335i e90 LCI Join Date: Jan 2013 Location: SW Florida Posts: 184 iTrader: (1) Garage List 2009 335i [5.00]	WOT means what... __________________ [font="Comic Sans MS"]e90 LCI Cobb: Stg1 +FMIC Aggressive ST VRSF 7" FMIC - Next To Do: White Rings "If you're not 1st, you're last" -Ricky Bobby

01-31-2013, 11:19 PM	#13
135Pats Gooby Pls. Drives: 135i Join Date: May 2012 Location: Maryland Posts: 1,612 iTrader: (0)	wide open throttle __________________ E88 FBO N54 Alpinweiss/Coral Red/Meisterschaft Race/Berk Resonated/Macht Schnell 3"/ER CP/Synapse/VRSF FMIC/BMS DCI/BMS Thermostat Delete/Rob Beck PCV/BMS OCC/Cobb 4.02/Alpina TCU Flash/Icarbon/3D Design/Cyba

02-01-2013, 12:13 AM	#14
cbad335 Lieutenant Colonel Drives: '09 E92 335i Join Date: Jan 2008 Location: Cardiff-by-the-Sea, CA Posts: 1,733 iTrader: (17) Garage List 2009 BMW 335i Coupe [5.00]	Do a proper 3rd gear pull. And make sure to disable traction control so you don't get throttle closure. Also, let us know what fuel you are running. __________________ \| 6MT \| ZSP \| ZPP \|

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