The Open Ecu Thread!!!!WRX/STI/EVO

[UnderPoweredRS]

Originally Posted by ray@turbotek

what he means by learning, is just like when you discconect the battery on the stock ecu it takes the computer some miles to adjust for optimum performance. it will not correct itself to factory parameters

si this is why it's kind of hard to tune on a dyno the car will react diffrently after a couple pulls.

[RayArroyo]

Originally Posted by UnderPoweredRS

si this is why it's kind of hard to tune on a dyno the car will react diffrently after a couple pulls.

our ecus have an Ignition Advance Multiplier. ( learned positive knock correction applied to the ignition maps. )

the more knock free the car is, the higher the ignition advance number will be. the lower it is, the more knock prone it is. when you reset the ecu the number defaults to 8 and takes some time to creep up to about 16. this is worth 10 - 20 horsepower


there is a way to do it on the subaru to get the ignition advanced multiplier to creep up with out having to wait.

here is some usefull info on how to do this thanks to shiv at vishnu

First: With the car fully warmed up, reset the ECU. This can be done by killing power the ECU or by simply pulling off the neg. battery terminal and pressing the brake pedal for a couple of seconds.

Second: Drive to a nice open road without traffic. Don't go on boost until you get there. Put the car into gear (3rd gear works the best) bring the revs up to 2600rpm. Push the go pedal down slightly so boost stays right around 2-4psi. You will need to MAINTAIN 2500rpm and 2-5psi for approx 5 seconds. You can do this by left-foot braking gently as to prevent acceleration. During these few seconds, the advance multiplier (which you can't see so you'll have to trust me) will go from 8, to 12 and then to 16. Works like a charm. And on our reflashed ECU, is worth an immediate 10-20 horsepower

In an attempt to save a lot of dyno time between reflashes (when the advance multiplier resets itself), I do this little trick after every reflash. In a typical dyno session, it's not unusual to reflash the same car up to 5 times. On the dyno, all I need to do is tell the dyno to hold revs to 2600rpm. Then I just lay on the throttle until I see a few psi of boost...

[Vince@R/TTuning]

Ray, with these ECU's are u able to datalog fuel trim (short term and long term)??

[RayArroyo]

i use innovates logworks for all my dataloging they now have an open port plug in. all you do is go through the setup and it links the wideband with the rest of the car to log.

[Vince@R/TTuning]

just wondering if u were able to datalog off the laptop while ur driving and see how much fuel adaption the ecu is doing in each cell and that will let u be able to fine tune the fuel maps a lil easier..

[RayArroyo]

Originally Posted by Vince@R/TTuning

just wondering if u were able to datalog off the laptop while ur driving and see how much fuel adaption the ecu is doing in each cell and that will let u be able to fine tune the fuel maps a lil easier..

not yet is the only thing that blows, we cant do any realtime tuning or view in which cell the car is in at a given time with it, i know that the software creators are working on it for the evo right now, we just have to sit and wait for the other cars. the only way to do it is to log a run and take a look at the rpms vs tps vs engine load vs maf and make adjustments from there. Its really not too hard though, the fuel maps are afr target maps which use the stock 02 sensor to achieve the target, once i realized the formula on how off the afr targets were to the actual vehicle air fuel mixture due to the stock 02 i can nail down afr's radther quickly.

[RayArroyo]

Originally Posted by ray@turbotek

not yet is the only thing that blows, we cant do any realtime tuning or view in which cell the car is in at a given time with it, i know that the software creators are working on it for the evo right now, we just have to sit and wait for the other cars. the only way to do it is to log a run and take a look at the rpms vs tps vs engine load vs maf and make adjustments from there. Its really not too hard though, the fuel maps are afr target maps which use the stock 02 sensor to achieve the target, once i realized the formula on how off the afr targets were to the actual vehicle air fuel mixture due to the stock 02 i can nail down afr's radther quickly.

this now makes emanage ultimate feel like a video game

now vince go and get an awd dyno so i can tune customer cars there

[RayArroyo]

THIS IS ONE OF THE LOGGERS

[Vince@R/TTuning]

thats cool... these new cars come with wideband sensors from factory and its crazy how acurate u can get ur a/f's during low load driving...some of the new hondas dont even go into open loop at full throttle they are so acurate and u need to disable the O2 input so u can tune it....

[UnderPoweredRS]

Originally Posted by ray@turbotek

THIS IS ONE OF THE LOGGERS

Is that the beta logger ray? If you want to mess around with the beta version of the logger let me know but I wouldn't recommend it if you are using it to tune cars. I've been playin with it just to work some bugs out.

[RayArroyo]

i was highly impressed when i saw how close it was on average i experience about a .7 difference so if on the afr target map you have 11.00 you will see about 11.7 thats pretty damn close!!!!

[Vince@R/TTuning]

[QUOTE=now vince go and get an awd dyno so i can tune customer cars there[/QUOTE]

o i know...hopefully some time next year... this one is almost paid off...i mean the awd option is only an extra $40,000 so i save my change everyday and put it in a jar...lol

[RayArroyo]

well its been a while

i want to come on here and talk about setting up your car for larger injectors.

below is a guide that i created for tuning an sti for pe injectors, but could also be used for anyother injectors and cars.

rays official guide to tuning your pe's

with this route i have achived perfect longterm and short term fueling
with minimal flashes.

*******please read before installing your complete setup**************

if your doing a complete turbo install before you rip any of your oem
parts of the car install your injector. if you have your setup already
installed figure out a way of utilizing the stock airbox.in my case
since i have a 20g i was able to utilize my stock intercooler as well.
by undoing some of the fmic piping in the way.

step 1 throw out any of the injector latency values and scaling you have laying around for these pe's, screw them we are going to do this from scratch!!!!!!!!

step 2 load up a stock map on your ecu and set the scaling to 803 and fire up the car

step 3 allow vehicle to reach operating temps and shut off.

step 4 reset ecu and log af learning 1 and and current. the magic numbers you are looking for are between -5 to +5 the closer to 0 you get these the better. if at this point the numbers appear higher than plus 5, scale the injector lower, if lower than -5 scale higher. to get these numbers closer to 0. each time you make a change and flash the car remember to reset the ecu so that when you fire up the car the af corrections start at 0 and monitor from there give yourself about 9 min of monitoring these trims before making changes as it takes the stock ecu time to learn.

By just adjusting injector scaling i was able to obtain a longterm of 3.20 and short terms betwen -1.00 and 4.00, remember the short terms will always move around just keep them below + 5 and higher than -5.By doing this my car had a rock solid idle and i didnt even have to touch the latency.

my final injector scaling is set at 775.65


Latency

What we are going to do here is adjust the latency settings to get these numbers even closer to 0.

once again with your car warmed up reset the ecu and monitor your long an shorterm fueling.
to get the numbers higher than your current values highlight the entire latency scale and bump the scaling up
to lower the corrections bump down the latency. follow the same procedure of making changes logging and resetting
the ecu as above.

in my case i bumped up the scaling .01 from stock and my short term was between -1 and 3.75 and longterm was 1.57
that is nearly stock.

at this point you want to take the car for a cruise and also monitor the fuel learning trims ( long and curent)

By this point the idle was rock solid and car drove like stock

my settings at idle
1.57 longterm
short term -.78 to about 2.00

settings at cruising
0.00 longterm
-1.00 to 00 short term.



now comes the fmic and intake

after i installed everything back the longterm when up to about 7.57 and so did the short term..
thats that intake pulling in more air and the 10 ft of piping making the distance between te maf and the tb longer,


now comes the maf scaling, at idle the maf should read about 1.28 to 1.29 volts

reset the ecu and start the car let it warm up to temps and log maf gs , maf voltage, long term airfuel learning and also short term,
to bring the longterm and short term numbers closer to 0 simly bump up the maf scaling in the needed g's cells till your long and short terms are closer to 0.



my final results were

1.57 longterm and -1 and 3.50 current at idle
cruising i was at 0 for both


incase anyone wants a base to start with


INJECTOR SCALING
775.65

LATENCY IS

6.00 9.00 12.00 14.00 16.00
7.67 2.70 1.38 1.06 0.76

MAF SCALING WILL VARY DEPENDING ON INTAKE AND FMIC.




Results perfect idle perfect driveabiliy no hicups car feels bone stock.

at this point you can proceed with your map for optimum power or drive it to a tuner.


ray
turbotektuning.com

[RyanG]

<--- tried to get the open ecu to work again last night. when I clicked on read from ecu an empty box popped up..
makes an unhappy Ryan


HOWEVER I did get the logger on Enginuity to work wow is that thing nice~~!!!!

[RayArroyo]

Originally Posted by AREA1320

<--- tried to get the open ecu to work again last night. when I clicked on read from ecu an empty box popped up..
makes an unhappy Ryan


HOWEVER I did get the logger on Enginuity to work wow is that thing nice~~!!!!

let
<-----------know when you want me to come up and school ^

[RyanG]

I will let ^ know sometime next week so ^ can come up and get
<---- skewld proppa son!

[RayArroyo]

ok thank ^

[RyanG]

<--- got it to work. disabling cels now
<--- thanks ^^^ 4 the help. although
<---- wants to shoot the shiit about messing with stuff

[TROLL]

bumping to post some info i was talking to ray about so he can see it and so can everyone else... he says this isnt right but i dunno... the guy who posted the info is a mod on openecu.org and i believe has helped with the development with it. its regarding the proper settings to use to rear and write to an 07 sti ecu...

http://forums.openecu.org/viewtopic....light=2007+sti

"Ecuflash doesn't actually have XML definitions for the 2007 STI. That means it doesn't know where any of the maps are. When you first open a 2007 STI ROM in Ecuflash, you will get an error "unknown ROM image" asking you what to do. The reason you are seeing those problems is because you got this error and chose to "copy" or "inherit" the definitions from another ROM at some point in time. This won't work!

You can download Enguinity from Enguinity.org and it will open the 2007 STI with correct XML definitions. You can use that to tune instead of Ecuflash.

For now, you should probably find the 2007 STI XML files (A2UJ000J and A2UG000J in ecuflash/rommetadata/subaru/sti/) and delete them. Then open ECUflash and open up your ROM again. This time, choose "define from scratch" when you get the "unknown ROM image" message . This is what you should be doing in the future as well. Now, you will see NO maps, but that is correct. Ecuflash doesn't have any maps defined for the 2007 STI, thus you can't use it to tune that ROM. You will need to use Enguinity, or manually open the above-mentioned XML files and put in the correct information. The former is probably the best option for you, as the later would involve a lot of work."

[RayArroyo]

Originally Posted by TROLL

bumping to post some info i was talking to ray about so he can see it and so can everyone else... he says this isnt right but i dunno... the guy who posted the info is a mod on openecu.org and i believe has helped with the development with it. its regarding the proper settings to use to rear and write to an 07 sti ecu...

http://forums.openecu.org/viewtopic....light=2007+sti

"Ecuflash doesn't actually have XML definitions for the 2007 STI. That means it doesn't know where any of the maps are. When you first open a 2007 STI ROM in Ecuflash, you will get an error "unknown ROM image" asking you what to do. The reason you are seeing those problems is because you got this error and chose to "copy" or "inherit" the definitions from another ROM at some point in time. This won't work!

You can download Enguinity from Enguinity.org and it will open the 2007 STI with correct XML definitions. You can use that to tune instead of Ecuflash.

For now, you should probably find the 2007 STI XML files (A2UJ000J and A2UG000J in ecuflash/rommetadata/subaru/sti/) and delete them. Then open ECUflash and open up your ROM again. This time, choose "define from scratch" when you get the "unknown ROM image" message . This is what you should be doing in the future as well. Now, you will see NO maps, but that is correct. Ecuflash doesn't have any maps defined for the 2007 STI, thus you can't use it to tune that ROM. You will need to use Enguinity, or manually open the above-mentioned XML files and put in the correct information. The former is probably the best option for you, as the later would involve a lot of work."

troll either way works wether you inherit or define from scratch either methods allows you to read write on ecuflash and edit on enginuity i have flashed atleast 5 2007 sti