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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, Dec-03-2017, 01:46:19 PM   #21
Obioban
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Default Re: Measuring gains from logging air moved through HFM?

335 345 330 doesn’t seem consistent enough to make meaningful tune changes.

Anyone getting more consistent results than that?
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Old Sun, Dec-03-2017, 01:50:45 PM   #22
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Default Re: Measuring gains from logging air moved through HFM?

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Originally Posted by Obioban View Post
335 345 330 doesn’t seem consistent enough to make meaningful tune changes.

Anyone getting more consistent results than that?
The sample rate of the logged data will matter for consistency. I believe Testo is 10 cycles/sec, which should give more consistent results. Not sure how fast the OBDII bluetooth dongles sample at.

FWIW, on the same section of road mine is always within a few HP. I usually export the CSV from the AEM log at 10Hz.
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Old Sun, Dec-03-2017, 02:02:13 PM   #23
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Default Re: Measuring gains from logging air moved through HFM?

Quote:
Originally Posted by paulclaude View Post
The sample rate of the logged data will matter for consistency. I believe Testo is 10 cycles/sec, which should give more consistent results. Not sure how fast the OBDII bluetooth dongles sample at.

FWIW, on the same section of road mine is always within a few HP. I usually export the CSV from the AEM log at 10Hz.
Can you explain the exact changes you made to the CSV to be rid of Error 111?

I have it down to literally this below in the open office
Time,TPS,RPM
150822,100,6097
151013,100,6097
151258,100,6097
151389,100.1,6946
151579,100.1,6946
151825,100.1,6946
151956,100,7671
152147,100,7671
152392,100,7671

I keep getting the error...is that how it is supposed to look?
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Old Sun, Dec-03-2017, 03:14:01 PM   #24
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Default Re: Measuring gains from logging air moved through HFM?

Ok I got it to work...well at least display a graph that says I have 81WHP haha

They key was to Use megalogview to export the log as an XLS (NOT CSV). Open it in excel so now every parameter has its own column. Delete every column except TIME RPM TPS, then save it as a .CSV file.

Go to virtual dyno, open the new edited and saved CSV and then choose the E46 M profile. This was a long log from my E36 w S54 I was all gear pulls etc. Being that I went to the dyno I can edit the settings that give me close to that WHP, then we will have E36 info as well.

Time to log some decent pulls and start tightening up the numbers.
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Old Sun, Dec-03-2017, 03:32:30 PM   #25
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Default Re: Measuring gains from logging air moved through HFM?

Quote:
Originally Posted by Obioban View Post
335 345 330 doesn’t seem consistent enough to make meaningful tune changes.

Anyone getting more consistent results than that?
well, its very sensitive to road conditions.. like I would need to start on the same spot(like mark a pole or a bridge or something) and do it, any elevation changes and it's off
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Old Sun, Dec-03-2017, 03:48:56 PM   #26
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Default Re: Measuring gains from logging air moved through HFM?

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Originally Posted by PITT M3 RR View Post
Ok I got it to work...well at least display a graph that says I have 81WHP haha

They key was to Use megalogview to export the log as an XLS (NOT CSV). Open it in excel so now every parameter has its own column. Delete every column except TIME RPM TPS, then save it as a .CSV file.

Go to virtual dyno, open the new edited and saved CSV and then choose the E46 M profile. This was a long log from my E36 w S54 I was all gear pulls etc. Being that I went to the dyno I can edit the settings that give me close to that WHP, then we will have E36 info as well.

Time to log some decent pulls and start tightening up the numbers.
That's interesting - I didn't have to do that at all with any Testo CSV's i've used. Simply opened them in openoffice, saved as comma separated CSV instead of semicolon, then copied and pasted the column headings (time, rpm, tps) into Testo options 'columns' tab.

Look forward to seeing some of your pulls all the same
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Old Sun, Dec-03-2017, 03:51:47 PM   #27
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Default Re: Measuring gains from logging air moved through HFM?

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Originally Posted by HassanEido View Post
well, its very sensitive to road conditions.. like I would need to start on the same spot(like mark a pole or a bridge or something) and do it, any elevation changes and it's off
Yeah that's it Hassan, you will have to ensure the road surface is even, and also no wheel spin. Luckily there is a perfect section of quiet, flat and smooth road not far from where I stay for testing
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Old Sun, Dec-03-2017, 04:02:15 PM   #28
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Default Re: Measuring gains from logging air moved through HFM?

Ok few more questions. When you are logging, are you just recording your whole drive and then coming back and finding the WOT points in the log or are you literally hitting start log -->make the pull in whatever gear-->stop log after letting off?

Before I was logging my entire drive because I could just scan the graph for the areas I wanted to see with timing, HFM, IAT etc...the log was about 15 minutes long.
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Old Sun, Dec-03-2017, 04:05:10 PM   #29
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Default Re: Measuring gains from logging air moved through HFM?

Quote:
Originally Posted by PITT M3 RR View Post
Ok few more questions. When you are logging, are you just recording your whole drive and then coming back and finding the WOT points in the log or are you literally hitting start log -->make the pull in whatever gear-->stop log after letting off?

Before I was logging my entire drive because I could just scan the graph for the areas I wanted to see with timing, HFM, IAT etc...the log was about 15 minutes long.
I usually start the log, then do the pull 2k-limiter shortly after. I then pull in at a handy stopping place, save the log and load it into Vdyno. No need for the rest of the random data and keeps the log file size small
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Old Sun, Dec-03-2017, 06:58:15 PM   #30
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Default Re: Measuring gains from logging air moved through HFM?

I went out and logged 4 runs then I looked over and saw my comp had an issue and was restarting...I thought they saved, but alas, they did not and I only found out at home. I'm going to try to get a few more runs later on.

I did manage 1 CSV from the trip...but I only went WOT at 5200 RPM to 8100 RPM on that one...it says I made 41WHP. I'm guessing its important to mash the throttle around 2K rpm and hold till redline


Also in Test0 are you logging in Milliseconds or seconds for time?
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Discussing Measuring gains from logging air moved through HFM? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)