Data Logs! Post them here.

[Tor]

Originally Posted by Wayno

Yes just flash 100 again. It only has 0.35 more advance than 98.

The IAM drop is because you're beating the crap out of the car loading it up in 4th at 2000 rpm, on stock headers with a timing map that's for catless headers at that range.

Don't bother doing any logs or pulls until 100 km, and don't do any highway in that first 100 km, then do a pull in 3rd from 2500 or 3000.

And don't bother paying any attention whatsoever to the timing until the fuel is correct.

Now it looks like this after 150 km careful OL focused driving. We had a change in weather since last log, it has become colder, with 19 deg C (the last logs were done at 25-28 deg C afair). 108.5 Stg.1 100 AU rich:

http://datazap.me/u/tor/1085-100au-r...7&zoom=184-733
IAM 1, no mentionable knock. AFR slightly too rich? Fuel trims have swapped. Before they were high +7 in high rpm. Now they are +6 in low rpm.

I am still wondering if the 108.2 MAF scale (non rich, same as OTS MAF) was better for my car and EU fuel (always min E5 due to regulations about renewable energy)?

Here for comparison. 108.2 stg 1 98 @28 deg C ambient:

http://datazap.me/u/tor/ww1082-stg-1...zoom=1140-1337
IAM = 1, no knock. AFR slightly lean? (does temperature play a role?). Very low fuel trims at all rpm.

MAF scale better for power? Could/should I copy that MAF scale over to the Stg. 1 100 AU rich rom?

[steve99]

Originally Posted by CZ6T

Ok, so I posted a log a little ways back, asking about why my AIM, FLKC, and MAF voltage don't work. Seems like its bugged for my ECU, Z00C, or something similar I think.

Anyways, I've had maybe 5 or so fillups now, and have also changed my headers to a catless EL, and the exhaust(which I don't think should change anything).

I've gotten Romraider downloaded now, and checked my KC Learned against the Knock Correction table A as suggested by @steve99 , and aa far as I can tell, everything looks spot on.

But, I'm wanting to know how concerned I need to be about the 4 dips for Knock Correction in this log. It happens around 2500-3600 in each instance, but this is the only log out of 3 I took that day that shows timing being pulled at all.

Any insight is definitely appreciated!

http://www.datazap.me/u/cz6t/log-146...data=1-2-3-5-6

P.S. this is Shiv's OTS E85 EL tune.

As @KOdenam47 said you need to log engine load and probably commanded afr as well as afr. this way you can tell if your running leaner than comnanded afr and also what engine loads this knock is happening. Then if its consistent over a coupke of logs you can either pull at bit of timing at or before the load\rpm points its happening and\or richen it up a bit if its running leaner than commanded afr

its rearly quite minor

[CZ6T]

Ok, thanks guys!

This might be a dumb question, but I thought that OFT automatically logged every sensor. If this isn't the case, does that mean it only logs the values that are displayed on the screen at the time?

[steve99]

Originally Posted by CZ6T

Ok, thanks guys!

This might be a dumb question, but I thought that OFT automatically logged every sensor. If this isn't the case, does that mean it only logs the values that are displayed on the screen at the time?

it can log about 30 different parameters, but only 14 available to be stored at any one time , ie the ones you see on screen, you need to change these to the ones you want to log

[solidONE]

I encountered some weird spiking of my LTFT under part throttle CL operation. The car was up to operating temps as I started the logging. Curious to see if any of you have seen anything like this. Also the Commanded AFR will hold at 15.06 as the throttle is opened right after switching to OL operation at low RPMs. I wonder if this is indicative of the rear O2 sensor going bad.

http://datazap.me/u/solidone/z7-kc1i...1392-1063-1104

http://datazap.me/u/solidone/z7-kc1i...1392-1063-1104

Short log 200 + miles after, same thing:

8.59% LTFT spike: http://datazap.me/u/solidone/z7-kc1i...8220&mark=8032

15.06 Commanded afr after switching to OL: http://datazap.me/u/solidone/z7-kc1i...3608-3918-3925

[fibble]

Hi guys,

Hoping that I can get some input on the attached logs.

Running completely stock 2015 manual car (D00G ROM) with Stage 1 tune based on Wayno's 107.2 Stg1 98 tables).

2 logs attached:

WOT and crusing
http://datazap.me/u/fibble/oft-stage...s?log=0&data=1

I am hoping for a second opinion - looks like I am running a little rich and LTFT are a little out.

I also have lost a little bit of confidence in OFT's logging on this ROM so am wondering if someone more experienced can run their eyes over it for knock (FLKC, Knock Correction and IAM still don't work on OFT for this ROM).

Thx

[Boomerang]

@fibble still waiting on that OFT update for logging, me too..
Getting a bit over it now after several months of asking..

[fibble]

Originally Posted by Boomerang

@fibble still waiting on that OFT update for logging, me too..
Getting a bit over it now after several months of asking..

LOL Boomy - I'll PM you my latest response from OFT. I just sent my regular reminder e-mail today

[steve99]

Originally Posted by fibble

Hi guys,

Hoping that I can get some input on the attached logs.

Running completely stock 2015 manual car (D00G ROM) with Stage 1 tune based on Wayno's 107.2 Stg1 98 tables).

2 logs attached:

WOT and crusing
http://datazap.me/u/fibble/oft-stage...s?log=0&data=1

I am hoping for a second opinion - looks like I am running a little rich and LTFT are a little out.

I also have lost a little bit of confidence in OFT's logging on this ROM so am wondering if someone more experienced can run their eyes over it for knock (FLKC, Knock Correction and IAM still don't work on OFT for this ROM).

Thx

There is a little knock around 4600 it runs a little lean just before that, which likely causes it, then higher rpm its running rich, not rearly bad, probably needs a bit of work on maf scale and load limits

[fibble]

Originally Posted by steve99

There is a little knock around 4600 it runs a little lean just before that, which likely causes it, then higher rpm its running rich, not rearly bad, probably needs a bit of work on maf scale and load limits

Thx Steve - I suspected a MAF re-scale was in order, I was just not sure how much is enough for a Stg 1 tune.

Next will be a Stg2 UEL on 98.
Optimising Wayno's Stg 1 tune is my "development environment" and I am having a bit of trouble without OFT working properly

[Tor]

How is this? I think it looks okay, but not sure about the fine details.

http://datazap.me/u/tor/tor-102-2?lo...zoom=2335-2459

Fuel trims are low, but is it okay with the jump around 5000 rpm?
Zooming out I have rather high negative fuel trims during normal driving, it that okay?
Is the AFR okay or does it go slightly too rich at high rpm?

It's got 125 km since flash. I drove the first 50 km with very deliberate closed loop focus and lots of Vishnu reset pulls. Thereafter normal driving with cruising to and from work (still careful) and some occasional WOT.

It's the Wayno 108.5 100 octane tune with OTS MAF and above 3.44 volt AU-rich scale. I have changed the base timing B for slightly more timing in the high rpm (than the 100 octane table) and slightly less below 4400 rpm:

[steve99]

Originally Posted by Tor

How is this? I think it looks okay, but not sure about the fine details.

http://datazap.me/u/tor/tor-102-2?lo...zoom=2335-2459

Fuel trims are low, but is it okay with the jump around 5000 rpm?
Zooming out I have rather high negative fuel trims during normal driving, it that okay?
Is the AFR okay or does it go slightly too rich at high rpm?

It's got 125 km since flash. I drove the first 50 km with very deliberate closed loop focus and lots of Vishnu reset pulls. Thereafter normal driving with cruising to and from work (still careful) and some occasional WOT.

It's the Wayno 108.5 100 octane tune with OTS MAF and above 3.44 volt AU-rich scale. I have changed the base timing B for slightly more timing in the high rpm (than the 100 octane table) and slightly less below 4400 rpm:

ltft in range of +/-5 is pretty good so its fine. It will move arround a bit more a low rpm and idle as the intake air temps move a lot. Their is a maf/iat compensation table that is supposed to compensate for this but its a bit "off" its probably not worth fiddling with. If the ltft is only off at -7 arround idle , note the maf volts and just reduce the flow numbers in that area by say 5% that will bring it closer to zero

[Tor]

Originally Posted by steve99

ltft in range of +/-5 is pretty good so its fine. It will move arround a bit more a low rpm and idle as the intake air temps move a lot. Their is a maf/iat compensation table that is supposed to compensate for this but its a bit "off" its probably not worth fiddling with. If the ltft is only off at -7 arround idle , note the maf volts and just reduce the flow numbers in that area by say 5% that will bring it closer to zero

Thanks for looking.

It's in the 3000 rpm region. Like cruising at low loads. Here ltft -8.44 is the worst:
http://datazap.me/u/tor/tor-102-2?lo...&zoom=575-2065

Most explanations about how to look at logs concentrate on WOT 3rd gear pulls, which make somewhat sense now. But what about cruising logs? I suppose the goal is still to have ltft as close to zero here as possible as well?

[steve99]

Originally Posted by Tor

Thanks for looking.

It's in the 3000 rpm region. Like cruising at low loads. Here ltft -8.44 is the worst:
http://datazap.me/u/tor/tor-102-2?lo...&zoom=575-2065

Most explanations about how to look at logs concentrate on WOT 3rd gear pulls, which make somewhat sense now. But what about cruising logs? I suppose the goal is still to have ltft as close to zero here as possible as well?

yep you could run it through the maf scaling utility again.

of if its just in that one particular area just reduce the maf flow numbers 5% in that area trying to keep the curve smooth