Data Logs! Post them here.

[Phantobe]

Originally Posted by JB86'd

Just looking at your straight 92 oct. log, your knock is super minor and it looks fine to me. On 91 oct. I get more knock than you just driving aggresively on the street, and I have base timing pulled, and IAT timing compensation. During autox my IAM dropped to around .8 I think. I'd say you're looking pretty good for track use. (Just my opinion, I am not an expert).

I'm noticing more that higher IAT really makes these motors much more knocky. I switched to Chevron btw, its been working better for me & much more toned down crickets.

[steve99]

Originally Posted by Sleepless

These logs are running the OTS OFT Stage 2 UEL 91 octane tune at the track.

I'm a noob at looking at the data so am looking for feedback on whether or not I should have the car tuned and why. I run it at the track often and the local gas is 92 and when I go to Calif it is 91, both 10% Ethanol. Sometimes I have access to 100 to mix or I can bring Torco Octane Accelerant.

Goal is to have a safe tune that takes advantage of my mods (K&N, OFH, Perrin 2.5" resonated with their over pipe; stock front pipe with cat).

This log is on 92 gas:
http://www.datazap.me/u/pstoppani/92...0&data=1-11-14

This one is 92/100 mixed 50/50:
http://www.datazap.me/u/pstoppani/92...0&data=1-11-14

This one is 92/100 mixed 75/25:
http://www.datazap.me/u/pstoppani/92...0&data=1-11-14

You getting a bit of knock this happens on the lower octane fuels, mixing in the better stuff helps, but you rearly need a full tank of the good fuel.

Some fuel brands are also better than others

For the track though on less than good 93 fuel i would probably do the mods for 91 octane tunes see the tune tweaks thread below

http://www.ft86club.com/forums/showt...47#post2216047

[steve99]

Originally Posted by Tectoniic

would someone mind taking a look at my log from a few minutes of driving with some decent acceleration.

Only thing i've done to the car is OFT stage 1 for 93. Been using shell 93 since day one.

http://www.datazap.me/u/tectoniic/lo...og=0&data=1-13

Looks like the 2015 roms are not logging IAM correctly as its zero.

Try logging flkc as well
looking at the KCLearned curve it looks like your pretty knock free and iam is actually 1.
for track use i would probably do the mods to the IAT and engine coolant temp compensation tables as i suggested to darksunrise a couple of posts back just for a bit of extra insurance

but looks fine from what i can see afr ok long fuel trims fine

[ray7792]

Hey I would be very grateful if someone could spare some time and look at two of my logs.

A while back I tried to scale my MAF for my fa20club CAI using Steve99's great guide. Thank you for all your work Steve.

I updated the MAF a number of times until summer ended and the Temp changed too much to be consistent. Last scaling log before recently: http://www.datazap.me/u/ray7792/ver5r1?log=0&data=1-2-8
I thought the log looked pretty decent, LTFT could still be better but otherwise...

I noticed the car was a little hesitant at some RPMs between 1700-2300 so I decided to revisit the scaling when the temperature rose back up recently.
Rescaled it again couple weeks ago and I think it went a step backwards? Not sure =/
http://www.datazap.me/u/ray7792/ver6...0&data=1-2-6-8
Adv multi dropped from 1 for the first time with this latest scaling and I'm getting more knock as well as a bit worse LTFT, but the hesitation is definitely gone which I'm happy about.

Not sure should I keep logging and scaling MAF or just go back to the previous scale?
Any thoughts and comments?

Any idea what could've been causing the hesitation in the first place? Example, very often I would give it a little throttle and I would see the RPMs go up like ~250-350 but I'm not accelerating then it'll drop back down and then the car would accelerate...strange. It isn't happening anymore after my most recent scaling.

Thank you very much!

[steve99]

Originally Posted by ray7792

Hey I would be very grateful if someone could spare some time and look at two of my logs.

A while back I tried to scale my MAF for my fa20club CAI using Steve99's great guide. Thank you for all your work Steve.

I updated the MAF a number of times until summer ended and the Temp changed too much to be consistent. Last scaling log before recently: http://www.datazap.me/u/ray7792/ver5r1?log=0&data=1-2-8
I thought the log looked pretty decent, LTFT could still be better but otherwise...

I noticed the car was a little hesitant at some RPMs between 1700-2300 so I decided to revisit the scaling when the temperature rose back up recently.
Rescaled it again couple weeks ago and I think it went a step backwards? Not sure =/
http://www.datazap.me/u/ray7792/ver6...0&data=1-2-6-8
Adv multi dropped from 1 for the first time with this latest scaling and I'm getting more knock as well as a bit worse LTFT, but the hesitation is definitely gone which I'm happy about.

Not sure should I keep logging and scaling MAF or just go back to the previous scale?
Any thoughts and comments?

Any idea what could've been causing the hesitation in the first place? Example, very often I would give it a little throttle and I would see the RPMs go up like ~250-350 but I'm not accelerating then it'll drop back down and then the car would accelerate...strange. It isn't happening anymore after my most recent scaling.

Thank you very much!

did not see iam drop in those logs but maybe go back to your first maf scaling where ltft was lower and no knock.
then have a look in the tune tweaks link below
suggest you lean out the OL fuel table as shiv suggests for low rpm hesitation
also try making the di\pi adjustments for low rpm and idle hesitation per ztan suggestion

[ray7792]

Originally Posted by steve99

did not see iam drop in those logs but maybe go back to your first maf scaling where ltft was lower and no knock.
then have a look in the tune tweaks link below
suggest you lean out the OL fuel table as shiv suggests for low rpm hesitation
also try making the di\pi adjustments for low rpm and idle hesitation per ztan suggestion

Hey thanks Steve!

Oh, the IAM drop was from another log with the same scaling my mistake.

yeah, sounds like a good idea to go back to the previous scaling.
I made the changes Shiv suggested, he tweaked it for those running E85, but I hope it shouldn't be an issue. I don't fully understand ztan's thing - enabling full DI at .2 g/rev but I'll try it since I trust you xD

Maybe I'll post another log if it looks off to me.

Thank you very much for your time!

[tonystewart]

ray7792

The CAI you are running is quite difficult to scale, imho. My experience was if it ran perfect at WOT then driveability and partial throttle response suffered. Tuned for driveability, WOT had flat spots and surging. If it had a proper MAF sensor mount, with air straighteners, I'm sure it would flow better.

Don't get me wrong, it's a beautiful looking air intake, but Mr Brown never took the time to engineer it properly. Hence I sold it.

[steve99]

Originally Posted by tonystewart

ray7792

The CAI you are running is quite difficult to scale, imho. My experience was if it ran perfect at WOT then driveability and partial throttle response suffered. Tuned for driveability, WOT had flat spots and surging. If it had a proper MAF sensor mount, with air straighteners, I'm sure it would flow better.

Don't get me wrong, it's a beautiful looking air intake, but Mr Brown never took the time to engineer it properly. Hence I sold it.

agree +1
@ray7792 easy solution would be put stock intake back on with drop in filter.

[P5yk0t1c]

@steve99


Thanks so much for answering a couple of my questions. I am beginning to understand the knock calculations a bit better. I just installed the Crawford BPB and loaded the Stage 2 UEL 91 BPB map. My first log showed IAM dropping to 0.63 then ending at 0.74. I tried to upload it but it was corrupt. This second log shows starting at 0.74 then going up to 0.93. Should I always be starting datalogging with that original map then making adjustments on a saved file a few times to see if I am always having the issues in the same area? I have tried looking at that knock correction tool, but it is beyond my skills at this point. I will probably just go the e-tuning route, but just wanted one of you guys to check this map and confirm that I have a few problems. My MAF seems ok to me, but not entirely sure...it was within the specs in that tune tweaks page.


Mod list:
Tomei UEL Header
EVO 3 catback
Ingen CAI
Crawford BPB
(OFT) Stage 2 UEL 91 BPB map


http://www.datazap.me/u/p5yk0t1c/cra...&data=1-7-9-13


Thanks again to all of you for taking the time to help a fellow out!

[steve99]

Originally Posted by P5yk0t1c

@steve99


Thanks so much for answering a couple of my questions. I am beginning to understand the knock calculations a bit better. I just installed the Crawford BPB and loaded the Stage 2 UEL 91 BPB map. My first log showed IAM dropping to 0.63 then ending at 0.74. I tried to upload it but it was corrupt. This second log shows starting at 0.74 then going up to 0.93. Should I always be starting datalogging with that original map then making adjustments on a saved file a few times to see if I am always having the issues in the same area? I have tried looking at that knock correction tool, but it is beyond my skills at this point. I will probably just go the e-tuning route, but just wanted one of you guys to check this map and confirm that I have a few problems. My MAF seems ok to me, but not entirely sure...it was within the specs in that tune tweaks page.


Mod list:
Tomei UEL Header
EVO 3 catback
Ingen CAI
Crawford BPB
(OFT) Stage 2 UEL 91 BPB map


http://www.datazap.me/u/p5yk0t1c/cra...&data=1-7-9-13


Thanks again to all of you for taking the time to help a fellow out!

Nothing rearly bad in that log some knock 2500 to 4000, and their must have been some knock earlier that dropped iam to 0.6 before that log started.

yes do a couple of logs to see where you consistenly get knock.

however some guys have already done the work for you see the tune tweaks link their is a link in their to Knock Correction on Usa 91 fuel you could just copy those changes to base timing b table and intake air temp retard table.

the pic below shows the changes not absolute values thanks to @JB86'd
http://www.ft86club.com/forums/showt...47#post2216047

[Wayno]

The BPB changes shiv posted with all that extra timing will knock a LOT on poor fuel.

This is how much timing I pulled to keep IAM=1 for mine WITHOUT the extra timing added in KCA and WITHOUT the extra timing added in per cylinder timing.

[bspec]

Hi there.. I'm trying to scale my MAF for an AEM airbox + HKS duct, and I'm getting something funky out of the YIKES spreadsheet. I'm still using the AEM in-line MAF module, which I think might be causing an issue, but thought I'd check here first.

When I go to publish new MAF scaling, I get an error 'MAF g/s Values must change at a positive rate'. All of the suggested cor % values are negative or 0.

I'm on OFT v2.066 stage 1 91oct tune.

Here's a recent datalog, FWIW (probably very little).
http://datazap.me/u/bombino/oft-ots-...0?log=0&data=1

Thanks very much

[aagun]

hey

i am looking for e85 tune for romraider . just for knowledge about e85 . on any code

[steve99]

Originally Posted by aagun

hey

i am looking for e85 tune for romraider . just for knowledge about e85 . on any code

you could look here as well

E85 economy increased, power same and Petrol tunes A01G/A01I
@Wayno has made up some A01G A01I ie European/Australian/South Africia pre 2014 auto/man roms with most of these tweaks installed and some of his own here see below, his E85 tunes have been track tested
http://www.ft86club.com/forums/showthread.php?t=83945