Data Logs! Post them here.

[DarkSunrise]

Originally Posted by DarkSunrise

If anyone is wondering about engine logs with OFT stage 2 at the track, here's mine.

http://datazap.me/u/darksunrise/trac...og=0&data=1-14

You can see a fair amount of knock in the form of FLKC, although IAM was solidly 1.0 and didn't drop.

In terms of fuel I was running:

- 2/3 of my tank was a bad batch of 93 octane (I filled up the day before my track event and was suddenly seeing knock on the street)
- 1/3 of my tank was 100 octane from the track

Call it 94 octane maybe. Definitely a good idea to add 100 octane or use e85 at the track. Later in the day, I later added another 1/3 tank of 100 octane and the engine was happier - I had much less knock and gained a couple of mph at the end of the straight. It's nice being able to pull on those pesky S2000's!

I had also installed a Perrin oil cooler. Looks pretty effective from the log. Even during the later hotter sessions, I don't think I saw anything north of 235 F. The only downside is I think the oil cooler lines are heating up my stock airbox and increasing IATs by 10 F, maybe more. I'm constantly seeing IATs 20 F above ambient now at speed.

I'll see if I can take some logs with higher mix of 100 octane later today.

Following up on my earlier post, here is a track log with a higher mix of 100 octane, roughly 97 octane:

http://datazap.me/u/darksunrise/data...og=0&data=1-14

You can see FLKC is much reduced. Oddly though, I started seeing progressively more FLKC in later sessions, even running the higher octane. Here's a log from my 4th (and fastest) session:

http://datazap.me/u/darksunrise/data...og=0&data=1-14

Even though IAM's remained solidly at 1.0, I might start running the OFT 91 octane map at the track to be safe.

The Perrin oil cooler was great at the track though. Peak oil temps were around 235 F, exactly what I was expecting.

[steve99]

Originally Posted by DarkSunrise

Following up on my earlier post, here is a track log with a higher mix of 100 octane, roughly 97 octane:

http://datazap.me/u/darksunrise/data...og=0&data=1-14

You can see FLKC is much reduced. Oddly though, I started seeing progressively more FLKC in later sessions, even running the higher octane. Here's a log from my 4th (and fastest) session:

http://datazap.me/u/darksunrise/data...og=0&data=1-14

Even though IAM's remained solidly at 1.0, I might start running the OFT 91 octane map at the track to be safe.

The Perrin oil cooler was great at the track though. Peak oil temps were around 235 F, exactly what I was expecting.

The 91 tune only pulls a bit of timing over 6000 rpm compared to 93 tune.

looks like your getting knock when intake ait temps IAT are higher.

Knock seem ok when IAT below 85 or so but when its 100 your getting a bit of knock

you might try adjusting the IAT vs ignition retard tables below

Try putting -2.11 in the 104F cell and -1.7 in the 86 cell in the Timing compensation IAT table. The current values are zero. That way you don't have to switch tunes and when IAT is below 86F you run full timing. Make sure you put the "-" minus sign in else it will add timing :-)

You might also consider adding some ignition retard to the Engine Coolant Temp (ECT) vs Ignition retard Table.A & B the two tables below the IAT tables shown below
Suggest -2 degrees retard at 212F and -3 degrees at 230 (this is what WRX ECU runs), stock/OFT tune ECT/retard tables A & B have no retard at high coolant temperatures

[DarkSunrise]

Originally Posted by steve99

The 91 tune only pulls a bit of timing over 6000 rpm compared to 93 tune.

looks like your getting knock when intake ait temps IAT are higher.

Knock seem ok when IAT below 85 or so but when its 100 your getting a bit of knock

you might try adjusting the IAT vs ignition retard tables below

Try putting -2.11 in the 104F cell and -1.7 in the 86 cell in the Timing compensation IAT table. The current values are zero. That way you don't have to switch tunes and when IAT is below 86F you run full timing. Make sure you put the "-" minus sign in else it will add timing :-)

You might also consider adding some ignition retard to the Engine Coolant Temp (ECT) vs Ignition retard Table.A & B the two tables below the IAT tables shown below
Suggest -2 degrees retard at 212F and -3 degrees at 230 (this is what WRX ECU runs), stock/OFT tune ECT/retard tables A & B have no retard at high coolant temperatures

Thanks so much! Will try these changes before my next track weekend.

[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

[Bobblehead]

I just installed a new JDL UEL header. Can someone who knows what they're looking at tell me if everything is running okay?

File titled "RUN1" was a 4th gear pull from ~3k to redline.

File titled "CRUISE1" was a 6th gear cruise at 65-70 mph.

Thanks so much!

Mod list:
K&N drop in filter
Blitz intake tube
OFT Stage 2 91 octane (I run 93 in the car)
JDL UEL header (ceramic coated)
Top Speed Pro-1 Axleback exhaust

[steve99]

Originally Posted by Bobblehead

I just installed a new JDL UEL header. Can someone who knows what they're looking at tell me if everything is running okay?

File titled "RUN1" was a 4th gear pull from ~3k to redline.

File titled "CRUISE1" was a 6th gear cruise at 65-70 mph.

Thanks so much!

Mod list:
K&N drop in filter
Blitz intake tube
OFT Stage 2 91 octane (I run 93 in the car)
JDL UEL header (ceramic coated)
Top Speed Pro-1 Axleback exhaust

Nothing out of the ordinary in their
IAM=1
Bit of very minor knock occasionally -0.6 arround 3000 pretty normal
fuel trims ok
AFR high rpm is normal for oft tune, they are generally on rich side
its easier to see whats going on if you post up your logs to www.datazap.me its free and then you can see graphical log and just post link just dont tick private if you want to share

[Bobblehead]

Originally Posted by steve99

Nothing out of the ordinary in their
IAM=1
Bit of very minor knock occasionally -0.6 arround 3000 pretty normal
fuel trims ok
AFR high rpm is normal for oft tune, they are generally on rich side
its easier to see whats going on if you post up your logs to www.datazap.me its free and then you can see graphical log and just post link just dont tick private if you want to share

Thank you, thank you, thank you!

Am I logging enough parameters or should I have more things chosen?

Is there a way to get rid of that little bit of knock?

Should I venture to a 93 octane tune or would I be pushing my luck?

Thanks again!

[steve99]

Originally Posted by Bobblehead

Thank you, thank you, thank you!

Am I logging enough parameters or should I have more things chosen?

Is there a way to get rid of that little bit of knock?

Should I venture to a 93 octane tune or would I be pushing my luck?

Thanks again!

The 93 tune should be fine with 93 fuel.

your minor knock is 3000-4800
the difference between 91/93 tunes is extra ignition timing over 6000 and your not getting any knock in that area.

you could try different brands of 93 fuel that might get rid of the lower rpm knock

or just pull (ie decrease) 0.7 degrees out of the BASE TIMING B table at

loads 0.8 through to 1.1, rpm 2800 to 3200
loads 1.0 to 1.2 , rpm 4000 to 5000

its rearly very minor knock not anything to be concerned about

see here

http://www.ft86club.com/forums/showthread.php?t=61820

[P5yk0t1c]

Hey guys,


I am trying to learn here, but I think I am off to a bad start already. I think I may have logged the wrong thing. I am trying to look to see if I need knock correction. I logged the following...can you have a look at it and let me know what I am missing? or explain if I should stop driving my car until I have fixed something.


I think I grabbed the wrong file for IAM....I have "ignition advance"


http://www.datazap.me/u/p5yk0t1c/log...data=1-3-4-5-6


Mod list:
Tomei UEL Header
EVO 3 catback
Ingen CAI
Stage 2 UEL 91 octane

[steve99]

Originally Posted by P5yk0t1c

Hey guys,


I am trying to learn here, but I think I am off to a bad start already. I think I may have logged the wrong thing. I am trying to look to see if I need knock correction. I logged the following...can you have a look at it and let me know what I am missing? or explain if I should stop driving my car until I have fixed something.




I think I grabbed the wrong file for IAM....I have "ignition advance"


http://www.datazap.me/u/p5yk0t1c/log...data=1-3-4-5-6


Mod list:
Tomei UEL Header
EVO 3 catback
Ingen CAI
Stage 2 UEL 91 octane

Yes be nice to see IAM

It does not look too bad bit of minor knock at lower rpm generally expected on 91 fuel , but rearly need to see if IAM=1

with injen intake you might want to look at LTFT long term fuel trims and AFR and commanded afr, those intakes can throw off fuel trims and afr. see maf scalng links.

see links below on logging knock correction and tune tweaks

[P5yk0t1c]

ok, I think I have the correct settings now. Can you tell me if I have anything that I should be looking into?


http://www.datazap.me/u/p5yk0t1c/kno...log=0&data=1-7


Mod list:
Tomei UEL Header
EVO 3 catback
Ingen CAI
Stage 2 UEL 91 octane V2.067
3,500 ft above sea level

[Sleepless]

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

To me it looks like the OTS tune is a bit too aggressive for track use. Anyone agree or disagree?

I think I'll have it custom tuned...

[JB86'd]

Originally Posted by Sleepless

To me it looks like the OTS tune is a bit too aggressive for track use. Anyone agree or disagree?

I think I'll have it custom tuned...

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).

[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