Cobb Stage 1 Sport just installed. Help with data logs

Jonjt · 01-31-2013, 12:05 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, 12:08 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, 12:38 AM

what in the actual fuck

135Pats · 01-31-2013, 09:00 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, 09:06 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, 09:20 AM

lol

Joshboody · 01-31-2013, 09:47 AM

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

Jonjt · 01-31-2013, 03:54 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, 04:03 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, 05:23 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, 09:45 PM

WOT means what...

Greatdane84 · 01-31-2013, 09:46 PM

WOT means what...

135Pats · 01-31-2013, 10:19 PM

wide open throttle

cbad335 · 01-31-2013, 11:13 PM

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, 10:27 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, 10:46 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, 06:19 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, 12:05 AM	#1
Jonjt Lieutenant 37 Rep 513 Posts Drives: 09 E92 335i M-sport Join Date: May 2012 Location: USA 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, 12:08 AM	#2
themyst Major General 177 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC 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
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01-31-2013, 12:38 AM	#3
skatenc123 Captain 11 Rep 645 Posts Drives: 2007 335i coupe Join Date: Jan 2012 Location: NC iTrader: (1)	what in the actual fuck
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01-31-2013, 09:00 AM	#4
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	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 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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01-31-2013, 09:06 AM	#5
E92mech E92 17 Rep 130 Posts Drives: 2010 E92 Le Mans M-Sport Join Date: Feb 2012 Location: Maryland 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.
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01-31-2013, 09:20 AM	#6
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	lol __________________ 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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01-31-2013, 09:47 AM	#7
Joshboody Lieutenant Colonel 65 Rep 1,708 Posts Drives: pickemuptruck Join Date: Jul 2009 Location: Phoenix, AZ iTrader: (7)	22,756sec of data... very thorough, catching every possible driving scenario.
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01-31-2013, 05:23 PM	#10
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden 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 - 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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01-31-2013, 09:45 PM	#11
Greatdane84 Leeeroy Jankins 31 Rep 423 Posts Drives: 335i e90 LCI Join Date: Jan 2013 Location: SW Florida iTrader: (2) Garage List 2009 335i [10.00]	WOT means what... __________________ e90 LCI w/ -= VRSF 7" FMIC =- -= Cobb: Stg1 +FMIC Aggressive ST =- Last Install: BMS DCI + Caliper/Drum Paint "If you're not 1st, you're last" -Ricky Bobby
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01-31-2013, 09:46 PM	#12
Greatdane84 Leeeroy Jankins 31 Rep 423 Posts Drives: 335i e90 LCI Join Date: Jan 2013 Location: SW Florida iTrader: (2) Garage List 2009 335i [10.00]	WOT means what... __________________ e90 LCI w/ -= VRSF 7" FMIC =- -= Cobb: Stg1 +FMIC Aggressive ST =- Last Install: BMS DCI + Caliper/Drum Paint "If you're not 1st, you're last" -Ricky Bobby
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01-31-2013, 10:19 PM	#13
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	wide open throttle __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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01-31-2013, 11:13 PM	#14
cbad335 Lieutenant Colonel 59 Rep 1,736 Posts Drives: '09 E92 335i Join Date: Jan 2008 Location: Cardiff-by-the-Sea, CA iTrader: (17) Garage List 2009 BMW 335i Coupe [7.34]	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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