Data Logs! Post them here.

[solidONE]

Originally Posted by Jonathanlim

Hey guys. I just installed a grimspeed intake. Ever since then I've been having some cold start issues. When starting up its hesitant to start and then eventually stalls itself. On the 2nd crank it starts up fine. Does anyone know what's wrong?(MAF rescaling)
Thanks
http://datazap.me/u/jlim7/cold-start...log=0&data=0-5

Hard to say since your car is stone cold in this log. You'd have to log more information AFTER you've brought it up to operating temps to determine how off your MAF scale is.

Check this thread out: http://www.ft86club.com/forums/showthread.php?t=69871

Edit: I'm not sure how common it is to require rescaling while running the grimspeed intake, but you might want to double check for any vacuum leaks just to be sure.

[Rezi]

Could someone please explain me why my tune is now reading much leaner?

With OTS Stg1 i had around 11.8-11.7 AFR at WOT
Now 12.5-12.2 AFR with Wayno's Stage 1.

Nothing has been changed to MAF Scaling or Fueling / OpenLoop etc. What is happening? And the knock in the log is for sure because of running lean.

Has it something to do with Front Oxygen Sensor Scaling?
I am the only one with those AFR values if i can remember in this whole thread :/

http://datazap.me/u/rezi/14062016wot...3268-3203-4549

[Wayno]

Originally Posted by Rezi

Could someone please explain me why my tune is now reading much leaner?

With OTS Stg1 i had around 11.8-11.7 AFR at WOT
Now 12.5-12.2 AFR with Wayno's Stage 1.

Nothing has been changed to MAF Scaling or Fueling / OpenLoop etc. What is happening? And the knock in the log is for sure because of running lean.

Has it something to do with Front Oxygen Sensor Scaling?
I am the only one with those AFR values if i can remember in this whole thread :/

http://datazap.me/u/rezi/14062016wot...3268-3203-4549

- Thats minor knock.
- Every car runs slightly different.
- They are example maps only. Front O2 is for AU cars.
- Stg1 runs leaner than Stg2 and always has.
- Stg1 generally knocks more due to having same timing map as Stg2 up to 6k rpm.
- Why don't you just replace front O2 with stock and test it instead of whinging?
- Multiply 3.44 and above by 1.02 and will be fixed, takes 2 min.

[randomthoughts]

Did another log today and it looks much different than the first one after 200km on the tune.

http://www.datazap.me/u/randomthough...l?log=0&data=1

[Rezi]

Originally Posted by Wayno

- Thats minor knock.
- Every car runs slightly different.
- They are example maps only. Front O2 is for AU cars.
- Stg1 runs leaner than Stg2 and always has.
- Stg1 generally knocks more due to having same timing map as Stg2 up to 6k rpm.
- Why don't you just replace front O2 with stock and test it instead of whinging?
- Multiply 3.44 and above by 1.02 and will be fixed, takes 2 min.

@Wayno Multiplying the MAF Cells did the trick. It follows the Commanded 1:1 at 3.44v and above. THANKS!
FLKC was also reduced.

Also, it seems that my FBKC is going crazy with AC activated, everytime the AC kicks in and i am on the throttle it seems to detect "false knock". Is that normal?

IAM dropped down to 0.98, but i think it is because of the AC. I will give it a another week of learning time for the knock-sensor.

AFR / IAM drop: http://datazap.me/u/rezi/16063?log=0...rk=3357-819-93

FBKC with AC on: http://datazap.me/u/rezi/16061?log=2...zoom=3140-4880

FYI, Intake Temperature was around 87F-90F

[solidONE]

Running your AC will throw the fuel trims off and can increase the amount of knock correction. Not sure if it "false" or real knock. As long as the computer is doing its job I wouldn't be too concerned with a bit of knock correction while the AC is turned on.

[BFIFE22]

http://datazap.me/u/bfife22/run4?log=0&data=1

3rd gear pull. Stg 2 UEL OTS tune. I have the Perrin Intake (non bigMAf), JDL Catted UEL header, and a Perrin Catback.

This run is with the OTS MAF scaling, using Perrin's MAF scaling for the non bigMAF intake made the AFR go really lean. This Stg 2 OTS tune also has less knock than the Stg 1 OTS tune did (which I initially ran because of the catted header)

IAM drops down to .98 then .95 starting around 4600 rpm. Any ideas?

EDIT: just read the above post. Would like to add that AC was on. Also, outside temp was ~95 degrees F and Intake Air Temp was ~100 degrees

[BFIFE22]

http://www.datazap.me/u/bfife22/run6?log=0&data=1

Starting to wonder if most of the knock is due to high ambient temperature. Here is another run on the same portion of road but with the outside temp at a brisk 84 degrees F. Notice some FLKC but IAM stays at 1 the entire run.

[Gliderx]

Hi guys!,

Finally went stg2 UEL. with JDL headers. Can you guys let me know what you guys think?

http://www.datazap.me/u/gliderx/log-...50?log=0&data=

[fibble]

Originally Posted by G-awesome

After two months of researching and testing, finally got my stage 2 custom tune dialed in with my JDL UEL catted header on Shell 91oct gas! (well 99%...still got a bit of consistent knock in a few areas but I can take a bit of timing out)

http://www.datazap.me/u/gawesome/201...576-669-91-165

I'm running a bit on the richer side during the WOT pulls in the 2000-5000rpm range. Should I adjust it so that it's closer to commanded AFR of 12ish:1 or just leave it as it?

Big thanks to wayno, steve99, kodename47, solidone (and anyone else I missed) that wrote the guides, provided the tools and helpful advice! The knock correction spreadsheet by kodename47 is a fantastic tool to sort out datalogs!

I'm excited to dial my tune in for Chevron 93 octane next!

This is music to my ears.

Since I have had the exact same header sitting in my shed for 6 mths and am thinking about finally installing it, are there any pointers you might like to share

Which "base" map did you finally choose to work from?

Thx

Oops - just noted your response in the other thread

[G-awesome]

Originally Posted by fibble

This is music to my ears.

Since I have had the exact same header sitting in my shed for 6 mths and am thinking about finally installing it, are there any pointers you might like to share

Which "base" map did you finally choose to work from?

Thx

Oops - just noted your response in the other thread

Actually, since you're in Australia, try Wayno's maps for 98RON since those are optimized for the crappy gas there. If you want to be on the safe side and not do too much work, start with the stage 1. If you want to try something more aggressive, you can use the stage 2. Collect a bunch of data and if the datalogs show that it knocks alot and the IAM drops too much, then switch to stg1 or pull timing from the stage 2 tune appropriately.

[fibble]

Originally Posted by G-awesome

Actually, since you're in Australia, try Wayno's maps for 98RON since those are optimized for the crappy gas there. If you want to be on the safe side and not do too much work, start with the stage 1. If you want to try something more aggressive, you can use the stage 2. Collect a bunch of data and if the datalogs show that it knocks alot and the IAM drops too much, then switch to stg1 or pull timing from the stage 2 tune appropriately.

Thanks for the info

I did have a look at Wayno's Base Timing B map for 98 RON, but have a sneaking suspicion I will see quite a bit of FLKC at 4500-6000 rpm given the added timing compared to Shiv's OTS. I suspect 1.5-2.5 degrees of FLCK in this range if I implement just changes to this table.

I will have a look at it once Shiv releases the updated logger definitions for D00G roms (my car) and post some logs for input in the meantime.

[steve99]

Originally Posted by fibble

Thanks for the info

I did have a look at Wayno's Base Timing B map for 98 RON, but have a sneaking suspicion I will see quite a bit of FLKC at 4500-6000 rpm given the added timing compared to Shiv's OTS. I suspect 1.5-2.5 degrees of FLCK in this range if I implement just changes to this table.

I will have a look at it once Shiv releases the updated logger definitions for D00G roms (my car) and post some logs for input in the meantime.

i think you will find wayno s maps run a bit less overall timing.

check the knock correction max A tables as well as total timing is Base Timing B plus Knock Correction Max A. I think you will find wayno has shifted the amount of timing in the knock correction table

[solidONE]

Since i was able to take some hot temperature logs thanks to the triple digit weather the past couple of days I was able to do some adjustments to MAF IAT compensation table. It's still a tick leaner than I'm shooting for in OL but the addition to the compensation table seems to be doing what is expected. The current maf scale was dialed to 65~72*f IAT so that the 68* column in the compensation table is unmolested at 0 compensation and the rest of the table is dialed according to fuel trims being logged in either colder or hotter IATs.

logged in 107*f ambient temps and +0.78% addition of fuel from LTFT:
http://datazap.me/u/solidone/z6-kc1e...zoom=5575-5737

Previous setting in approx 90*f ambient and -0.78% fuel from LTFT"
http://datazap.me/u/solidone/z61b-ho...13&zoom=52-181

You will also notice that the ignition advance is a few degrees lower as I've also made the IAT ignition advance compensation more aggressive in pulling timing at higher IAT above 100*f. If only there was a ignition advance compensation table for oil temps...

Edit: Same revised IAT compensation tables @77*f ambient and +0.78% LTFT: http://datazap.me/u/solidone/kc1e-78...zoom=5939-6375

A little richer than intended at 83*f IATs. looks like I overshot the compensations in OL MAF voltages for temps above 68*f and below 100*f. Will reduce compensation below 100*f IAT adn increase above 100*f. Very close to matching the actual AFR output to my OL Fuel tables. :fistpump:

Edit 2: Minor adjustments on this "h" revision of the IAT MAF compensation table. Target AFR's (OL fuel table) are approx 0.25:1 lower than Commanded AFR. 80*F IAT and about 75*f Ambient and 0% LTFT. So far so good. AFR are above 95% accurate in OL above the AFR fluctuations caused by VVT ( 4200rpm-ish) and below 7000RPMs before 20% PI kicks in. Hopefully I can get some logs with IAT's above 110*F soon. I will be aiming to get the AFR to run at or slightly richer above 100*F IAT's.

http://datazap.me/u/solidone/z6-kc1h...zoom=2286-2626

66*f IAT same H calibration, looks to be slightly leaner than I remembered. : http://datazap.me/u/solidone/z6-kc1h...zoom=1878-2059

G cal with 90*f IAT: http://datazap.me/u/solidone/kc1g-1s...zoom=4187-4466
vs.
H cal with 90*f IAT: http://datazap.me/u/solidone/z6-kc1h...mark=5906-5846

Afr did not budge with the minor changes applied to the MAF IAT comp table.