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Old 03-18-2019, 12:31 AM   #1701
BoostedHULK32
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I apologize about the delay. So, i got the new maf and did a quick pull and log. I am still seeing some fine knock and still seeing some a/f correction but it's not maxing out the correction anymore. I really appreciate the help and feedback.

https://docs.google.com/spreadsheets...it?usp=sharing
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Old 03-19-2019, 11:13 AM   #1702
86Dreams
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Quote:
Originally Posted by BoostedHULK32 View Post
I apologize about the delay. So, i got the new maf and did a quick pull and log. I am still seeing some fine knock and still seeing some a/f correction but it's not maxing out the correction anymore. I really appreciate the help and feedback.

https://docs.google.com/spreadsheets...it?usp=sharing
Good Im glad it was easy. That log does look much better.

a couple things to consider

The fron 02 sensor is not a wideband and is really only accurate down to about 13.5 AFR after that there it cannot be trusted. For this reason AF learning and AF correction cannot be used effectively outside of cruising and idling.

An after market wideband will be necessary if youre tuning it yourself. Compare afr from the wide band against comm fuel map as well as comm fuel final.

The knock is probably not real, its feedback and it learns away instead of increasing, it also appears to be right after a shift so that may be what triggered it.

Keep an eye on the negative value for af learning around idle, it may be nothing, it may be something.
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Old 03-19-2019, 04:34 PM   #1703
BoostedHULK32
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Thank you. I bought a wideband but cant use it until i get the car tuned as far as i know.


Quote:
Originally Posted by 86Dreams View Post
Good Im glad it was easy. That log does look much better.

a couple things to consider

The fron 02 sensor is not a wideband and is really only accurate down to about 13.5 AFR after that there it cannot be trusted. For this reason AF learning and AF correction cannot be used effectively outside of cruising and idling.

An after market wideband will be necessary if youre tuning it yourself. Compare afr from the wide band against comm fuel map as well as comm fuel final.

The knock is probably not real, its feedback and it learns away instead of increasing, it also appears to be right after a shift so that may be what triggered it.

Keep an eye on the negative value for af learning around idle, it may be nothing, it may be something.
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Old 03-20-2019, 10:38 AM   #1704
86Dreams
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Quote:
Originally Posted by BoostedHULK32 View Post
Thank you. I bought a wideband but cant use it until i get the car tuned as far as i know.
Hmm? That doesnt sound right. Its independant of the ecu. its a standalone device. what model do you have?
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Old 03-23-2019, 12:40 AM   #1705
BoostedHULK32
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Its a bosch o2 but its to hook up to my cobb. I didnt buy a standalone setup.

Quote:
Originally Posted by 86Dreams View Post
Hmm? That doesnt sound right. Its independant of the ecu. its a standalone device. what model do you have?
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Old 03-27-2019, 12:24 PM   #1706
no694terry
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Stock Ej206
bw s252 at 18psi
93 octane
still a lil rich at peak boost area and making a couple tweaks but i think im good on my gasoline table, going to start pumping e85 and shoot for 350g/sec

https://datazap.me/u/terryjr/18psi-n...zoom=1414-1531
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Old 03-28-2019, 01:56 PM   #1707
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Hey all, I have been working with my car for awhile now and last night I ran into something new. The second pull had a bunch of knock correction in it. I have times when I had a bit in the first run because the car wasnt ready to let it go yet but never on the second run and none on the first.

There is some extra noise in these as I was tracking a few other things randomly

2004 USDM Forester XT
manual, 3rd gear
perrin intake, gutted DP, Grimspeed EBCS
same road and its flat

I use a AEM wideband as well

Thank you for any help you can offer. If you need more info let me know and I'll get it.

https://drive.google.com/open?id=1oR...z1636r9SiuqEhF
https://drive.google.com/open?id=1oU..._JGn6Ef4Bn3w_R
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Old 04-11-2019, 12:32 PM   #1708
no694terry
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any ideas on my 4400rpm spike

im getting a consistant spike in AFR at around 4400 rpm. I dont want to just boner up my VE value in that area. Its in open loop, seems to mostly happen when im doing full 3rd gear pulls for tuning. I used to get something similar but as a rich spike from rapid load compensation.

https://datazap.me/u/terryjr/log-155...6&zoom=388-472
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Old 04-13-2019, 08:58 PM   #1709
BoostedHULK32
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Default ej swapped 2.5rs, sluggish boost building

This is a friend's log on an ej20 swapped 2.5rs.
it's from an '03 WRX in a '99 RS.
He has a 2.5l Forester XT to compare to and feels like it's sluggish a bit on the bottom end. Also feels like it's not consistent power. Any feedback would be awesome. I've received a ton of help from the forum on my datalogs so i thought i'd see if you guys could help me out. This is a good friend of mine and really appreciate the help, thanks,
Hulk

Joey Datalog
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Old 04-15-2019, 09:27 AM   #1710
86Dreams
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Quote:
Originally Posted by BoostedHULK32 View Post
This is a friend's log on an ej20 swapped 2.5rs.
it's from an '03 WRX in a '99 RS.
He has a 2.5l Forester XT to compare to and feels like it's sluggish a bit on the bottom end. Also feels like it's not consistent power. Any feedback would be awesome. I've received a ton of help from the forum on my datalogs so i thought i'd see if you guys could help me out. This is a good friend of mine and really appreciate the help, thanks,
Hulk

Joey Datalog
so this is a 205 from a wrx? totally stock? does it have an intake or downpipe? what kind of intercooler? VF turbo?
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Old 04-15-2019, 03:58 PM   #1711
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It is a 205 from a wrx, stock td04 turbo, has inlet tube and intake, aftermarket downpipe and exhaust, cobb ebcs, stock intercooler, running cobb 91 oct stage 2 tune.

I was looking at the numbers and the dynamic advance seems to be way different than my forester. Not a 0-1 scale. The impreza was at 16 today

Last edited by BoostedHULK32; 04-15-2019 at 05:16 PM.
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Old 04-16-2019, 08:38 AM   #1712
86Dreams
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Quote:
Originally Posted by BoostedHULK32 View Post
It is a 205 from a wrx, stock td04 turbo, has inlet tube and intake, aftermarket downpipe and exhaust, cobb ebcs, stock intercooler, running cobb 91 oct stage 2 tune.

I was looking at the numbers and the dynamic advance seems to be way different than my forester. Not a 0-1 scale. The impreza was at 16 today
this is normal. The ECU in your car is more advanced with a 32 bit processor so it uses a multiplier from 0-1.0 for DAM where as the older ECUs have a 16 bit processor which tracks a number from 0-16 then divides that number by 16 to recover the decimal. This decimal value is multiplied by a referenced value in the DAM Table and then the product is added to base timing to calculate ignition total timing. Ignition total timing is also affected by a few other compensations.

The purpose of this system is to allow varrying qualities of fuel on one calibration.

Your friend having an intake needs to have his MAF re-calibrated, which is almost certainly why knock is occurring.
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Old 04-17-2019, 03:02 PM   #1713
no694terry
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Welp, its about as close as i can get it. Now i just wonder how much boost a stock Ej206 will take. I feel like my g/rev and g/sec are low from my injector scale being low. They flow 950cc at 43psi, but i have them at 55psi and set scale to only 1000cc.


E42 log
https://datazap.me/u/terryjr/1030log...7&zoom=653-744

E70
https://datazap.me/u/terryjr/1030log...&zoom=954-1048

Tip-in could use a little love
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Old 04-19-2019, 03:38 PM   #1714
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Default AVCS Woes, Datalog included

Hey all just need someone to check out my datalog here, have been doing some avcs diag and need to make sure everything looks okay


https://docs.google.com/spreadsheets...it?usp=sharing
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Old 08-16-2019, 07:13 AM   #1715
no694terry
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I think im past MBT. Ej206, e76

couple weeks ago

https://datazap.me/u/terryjr/23psi-0...4&zoom=304-378


with 2-3 degrees more timing. The load and g/sec stayed pretty much the same.

https://datazap.me/u/terryjr/more-ti...4&zoom=339-403
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Old 08-16-2019, 08:46 AM   #1716
86Dreams
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that could happen tho. I increase timing get the same load and more power. what turbo and wg is this? EGT might give you some clue if you cant measure power.
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Old 08-16-2019, 09:30 AM   #1717
ShinjiML
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Load is calculated based on airflow, which is measured prior to it entering the engine (regardless of whether it is MAF or SD) so adding timing shouldn't affect it, unless it has a noticeable impact on engine VE. Changing avcs would have an impact on airflow.
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Old 08-16-2019, 03:05 PM   #1718
no694terry
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i wish i could log cylinder pressure
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Old 08-19-2019, 02:59 PM   #1719
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Quote:
Originally Posted by ShinjiML View Post
Load is calculated based on airflow, which is measured prior to it entering the engine (regardless of whether it is MAF or SD) so adding timing shouldn't affect it, unless it has a noticeable impact on engine VE. Changing avcs would have an impact on airflow.
but i always thought the g/sec and hp were closely related. If more timing yields more torque and power, i expected to see an increase in g/sec at the same manifold pressure and intake temps
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Old 08-19-2019, 04:37 PM   #1720
86Dreams
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Quote:
Originally Posted by no694terry View Post
but i always thought the g/sec and hp were closely related. If more timing yields more torque and power, i expected to see an increase in g/sec at the same manifold pressure and intake temps
They are related by how efficient the motor is at extracting useful work from the fuel air mixture. Adding more timing may extract more useful work from the fuel air mixture by making it more efficient. If you add more air and fuel at the same timing then you could increase power because youve increased the amount of chemical potential energy contained within the cylinder. It is not quite that linear though as timing tends to decrease with load and it is possible to add too much timing such that the combustion event is doing negative work (reducing efficiency).
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Old 08-20-2019, 11:35 AM   #1721
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Quote:
Originally Posted by 86Dreams View Post
They are related by how efficient the motor is at extracting useful work from the fuel air mixture. Adding more timing may extract more useful work from the fuel air mixture by making it more efficient. If you add more air and fuel at the same timing then you could increase power because youve increased the amount of chemical potential energy contained within the cylinder. It is not quite that linear though as timing tends to decrease with load and it is possible to add too much timing such that the combustion event is doing negative work (reducing efficiency).
i pulled two degrees back out out the whole map yesterday. felt smoother again. I dunno, i hate tuning timing, always feel like im leaving stuff on the table but at the same time i dont want to window my block. 23psi on an ej206 may already be pushing it. Rods, pistons, studs and a 4bar this winter though
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Old 08-20-2019, 12:43 PM   #1722
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Quote:
Originally Posted by no694terry View Post
i pulled two degrees back out out the whole map yesterday. felt smoother again. I dunno, i hate tuning timing, always feel like im leaving stuff on the table but at the same time i dont want to window my block. 23psi on an ej206 may already be pushing it. Rods, pistons, studs and a 4bar this winter though
23 psi at what maf and RPM? Did you compare that timing against a 205 or 207 while keeping compression ratio in mind? The timing that put a 'window' into my 205 is whats stock on my 207, lol.

Ive always noticed that less timing feels smoother, it affects sound as well.

I just picked up a kinugawa wg actuator so Im going to see if i get any more air from more boost. on the vf42 the wg opens at about 17 psi running 90% DC.
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Old 08-20-2019, 01:07 PM   #1723
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Quote:
Originally Posted by 86Dreams View Post
23 psi at what maf and RPM? Did you compare that timing against a 205 or 207 while keeping compression ratio in mind? The timing that put a 'window' into my 205 is whats stock on my 207, lol.

Ive always noticed that less timing feels smoother, it affects sound as well.

I just picked up a kinugawa wg actuator so Im going to see if i get any more air from more boost. on the vf42 the wg opens at about 17 psi running 90% DC.
if i pull up a JDM legacy GT rom, 2.35g/rev at 4800rpm, its around 11°. Im at 24° LOL, but e85

its SD and i think my values are low from my injector scaling. theyre 950's at 4 bar but i run 5 bar and only scled them to 1000 and started the VE tables. Usually hits 23around 5k 210-230g.sec and holds 22psi at redline 300g/sec on ethanol. 93 octane i was getting 300g/sec on 16-18psi. But i use same VE table and smae injector scale for both fuels even though im starting to think flow is much differnet between the two

Last edited by no694terry; 08-20-2019 at 01:53 PM.
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Old 08-20-2019, 03:17 PM   #1724
86Dreams
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Quote:
Originally Posted by no694terry View Post
if i pull up a JDM legacy GT rom, 2.35g/rev at 4800rpm, its around 11°. Im at 24° LOL, but e85

its SD and i think my values are low from my injector scaling. theyre 950's at 4 bar but i run 5 bar and only scled them to 1000 and started the VE tables. Usually hits 23around 5k 210-230g.sec and holds 22psi at redline 300g/sec on ethanol. 93 octane i was getting 300g/sec on 16-18psi. But i use same VE table and smae injector scale for both fuels even though im starting to think flow is much differnet between the two

If you get 300g/s on 93 at 17psi you should get 300g/s at 17 psi on e85 as well. what happens if you turn boost down to 17 by redline on e85?

IDs flow ratings at different base fuel pressures are here,
http://injectordynamics.com/injectors/id1000/
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Old 08-20-2019, 03:33 PM   #1725
no694terry
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Quote:
Originally Posted by 86Dreams View Post
If you get 300g/s on 93 at 17psi you should get 300g/s at 17 psi on e85 as well. what happens if you turn boost down to 17 by redline on e85?

IDs flow ratings at different base fuel pressures are here,
http://injectordynamics.com/injectors/id1000/
MBC, its does what it wants. Im almost over it. this winters getting some changes. New slugs and swapping over my rods, studs from the ej22. Going to add a 4bar map and some 1200/1300cc injectors. BUT im going to flow test them with e85 and 93pump at 5 bar in my driveway. Calibration fluid can lick my nuts
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