Data Logs! Post them here.

[Rezi]

Originally Posted by solidONE

How do you know this? OFT reads what the factory computer reads from the O2 sensor. Unless the O2 calibration is off, there should be no reason that the OFT would read any leaner than what the O2 is reading.

Compare a log from tactrix and OFT.
From my logic (Open Loop Fueling) commanded should be 11.8 (as sample from wayno's) but OFT reads 12.0

[BFIFE22]

http://datazap.me/u/bfife22/4317-run...=0&data=1-7-14

I recently changed my MAF scaling to Waynos v122 2% rich values. I was running as rich as 11.25 before, so I wanted to get gradually closer to command AFR. On this new log, I'm running really close to it, but I'm just a tad leaner than command. Is it enough to worry about and it needs adjusting? Or is it close enough where I should be fine?

[solidONE]

Originally Posted by Rezi

Compare a log from tactrix and OFT.
From my logic (Open Loop Fueling) commanded should be 11.8 (as sample from wayno's) but OFT reads 12.0

I don't have a tactrix to log with, but I do notice that the commanded AFR will read around .2 leaner than what is actually being targeted on the fuel map. I'm guessing that is what you were referring to (the Commanded AFR) and not the actual AFR reading from the O2 sensor?

So the tactrix data logs shows a Commanded AFR that is accurate to the OL fuel map, yes?

[Tor]

Originally Posted by BFIFE22

http://datazap.me/u/bfife22/4317-run...=0&data=1-7-14

I recently changed my MAF scaling to Waynos v122 2% rich values. I was running as rich as 11.25 before, so I wanted to get gradually closer to command AFR. On this new log, I'm running really close to it, but I'm just a tad leaner than command. Is it enough to worry about and it needs adjusting? Or is it close enough where I should be fine?

Your LTFT is 0. That means the ECU didn't apply any corrections yet. If you ran rich before there is a high likelihood that it will go a bit richer with this scale too. The LTFT is set at the part of the MAF scale that you didn't change. So most likely you are fine with this.

Drive the car normally for 100 miles and do another log. Normally means not full throttle all the time but don't baby it too much either as it might not hit the rev/loads needed to learn properly (at least that's my experience). Drive at varied speeds and gears to hit different loads and rpm combinations. You don't need to be conscious about it, just drive the car like you are going to get groceries etc.

[Tor]

P.s.
I just looked at one of your old logs:
http://datazap.me/u/bfife22/32817-run?log=0&data=1-9

Your LTFT is about 4 above 5k rpm. That you have a split at 5k rpm shows that you are not running the latest Wayno tune. You really should upgrade to the latest version as it is running much better and more consistent. PM Wayno and get the latest version from him.

[Conman]

I did a couple logs today on the 91 Uel tune... Ran her out of gas and switched over to e85. Haven't logged anything yet. But does my 91 logs look ok? Thanks

http://www.datazap.me/u/conman/log-1...0?log=1&data=1

http://www.datazap.me/u/conman/log-1...0?log=0&data=1

[steve99]

Originally Posted by Conman

I did a couple logs today on the 91 Uel tune... Ran her out of gas and switched over to e85. Haven't logged anything yet. But does my 91 logs look ok? Thanks

http://www.datazap.me/u/conman/log-1...0?log=1&data=1

http://www.datazap.me/u/conman/log-1...0?log=0&data=1

yeah looks fine, maybe a little rich but looks like log was taken soon after flash and fuel trims trending negative. bt noting to rearly worry about

[BFIFE22]

Originally Posted by Tor

P.s.
I just looked at one of your old logs:
http://datazap.me/u/bfife22/32817-run?log=0&data=1-9

Your LTFT is about 4 above 5k rpm. That you have a split at 5k rpm shows that you are not running the latest Wayno tune. You really should upgrade to the latest version as it is running much better and more consistent. PM Wayno and get the latest version from him.

That 3.28 run was with the default OFT MAF Scaling. I switched to the Wayno scale for the 4.3 run from my post earlier.

After driving about 100 miles, I did a run last night and the AFR was much closer to commanded. LTFT stays at -3.91 the entire time I'm WOT

http://datazap.me/u/bfife22/47-run-2...&data=1-7-9-14

[Conman]

Originally Posted by steve99

yeah looks fine, maybe a little rich but looks like log was taken soon after flash and fuel trims trending negative. bt noting to rearly worry about

Cool thanks! Feels real good on the 91. Excited to see what e85 does. Will post some new logs tomorrow.

[Vin]

So I'm running a Gruppe S header and overpipe, custom exhaust, Hks intake filter and Supertek intake pipe. I'm using BP98 and Wayno 122.5 100 Stage 2 Uel, it was running a bit rich at first thus I've created my own - 2% lean version. Curious what you gurus think of my log :

http://datazap.me/u/vvanrooij/1225-1...m?log=1&data=1

[steve99]

Originally Posted by Vin

So I'm running a Gruppe S header and overpipe, custom exhaust, Hks intake filter and Supertek intake pipe. I'm using BP98 and Wayno 122.5 100 Stage 2 Uel, it was running a bit rich at first thus I've created my own - 2% lean version. Curious what you gurus think of my log :

http://datazap.me/u/vvanrooij/1225-1...m?log=1&data=1

looks fine.


if you were rearly kean you could lean out the section over 7100 rpm where it still runs a little rich. but its all fine

[Conman]

first logs on E85. Is the ltft looking ok? Why are they so negative compared to the 91 tune? Just flashed it to e85 yesterday. Its the oft e85 UEl file

http://www.datazap.me/u/conman/log-1...=1-2-3-5-7-8-9

[steve99]

Originally Posted by Conman

first logs on E85. Is the ltft looking ok? Why are they so negative compared to the 91 tune? Just flashed it to e85 yesterday. Its the oft e85 UEl file

http://www.datazap.me/u/conman/log-1...=1-2-3-5-7-8-9

lower than about 75% ethanol will result in negative fuel trims . This is ecu dialing back fueling due petrol content. !st tank of E85 will have about 8-10 litres of petrol (if you ran it down to low fuel light). Second tank will see more normal ltft.

[Conman]

Right on thanks Steve99! Took it for a longer drive today and defiantly noticed a change in how it felt/sounded. Here is another log; the ltft in this one is closer to zero.

http://www.datazap.me/u/conman/log-1...ta=1-2-5-7-8-9