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03-18-2019, 12:31 AM | #1701 |
Scooby Newbie
Member#: 498609
Join Date: Mar 2019
Chapter/Region:
NWIC
Vehicle:2005 forester xt black |
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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03-19-2019, 11:13 AM | #1702 | |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Quote:
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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03-19-2019, 04:34 PM | #1703 | |
Scooby Newbie
Member#: 498609
Join Date: Mar 2019
Chapter/Region:
NWIC
Vehicle:2005 forester xt black |
Thank you. I bought a wideband but cant use it until i get the car tuned as far as i know.
Quote:
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03-20-2019, 10:38 AM | #1704 |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
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03-23-2019, 12:40 AM | #1705 |
Scooby Newbie
Member#: 498609
Join Date: Mar 2019
Chapter/Region:
NWIC
Vehicle:2005 forester xt black |
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03-27-2019, 12:24 PM | #1706 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
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 |
03-28-2019, 01:56 PM | #1707 |
Scooby Newbie
Member#: 499687
Join Date: Mar 2019
Chapter/Region:
W. Canada
Location: Edmonton AB
Vehicle:2004 Forester xt White |
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 |
04-11-2019, 12:32 PM | #1708 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
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 |
04-13-2019, 08:58 PM | #1709 |
Scooby Newbie
Member#: 498609
Join Date: Mar 2019
Chapter/Region:
NWIC
Vehicle:2005 forester xt black |
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 |
04-15-2019, 09:27 AM | #1710 | |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Quote:
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04-15-2019, 03:58 PM | #1711 |
Scooby Newbie
Member#: 498609
Join Date: Mar 2019
Chapter/Region:
NWIC
Vehicle:2005 forester xt black |
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. |
04-16-2019, 08:38 AM | #1712 | |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Quote:
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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04-17-2019, 03:02 PM | #1713 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
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 |
04-19-2019, 03:38 PM | #1714 |
Scooby Newbie
Member#: 455234
Join Date: Sep 2016
Chapter/Region:
E. Canada
Location: Canada
Vehicle:2015 STI Red |
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 |
08-16-2019, 07:13 AM | #1715 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
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 |
08-16-2019, 08:46 AM | #1716 |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
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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08-16-2019, 09:30 AM | #1717 |
Scooby Specialist
Member#: 257231
Join Date: Sep 2010
Chapter/Region:
Tri-State
Location: Hudson Valley, NY
Vehicle:2011 STI ShinjiTuned DGM |
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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08-16-2019, 03:05 PM | #1718 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
i wish i could log cylinder pressure
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08-19-2019, 02:59 PM | #1719 |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
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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08-19-2019, 04:37 PM | #1720 |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
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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08-20-2019, 11:35 AM | #1721 | |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
Quote:
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08-20-2019, 12:43 PM | #1722 | |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Quote:
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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08-20-2019, 01:07 PM | #1723 | |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
Quote:
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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08-20-2019, 03:17 PM | #1724 | |
Scooby Specialist
Member#: 385256
Join Date: Mar 2014
Chapter/Region:
NESIC
Vehicle:'18 Giulia QV '21 Giulia Q4 |
Quote:
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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08-20-2019, 03:33 PM | #1725 | |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
Quote:
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