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Old 05-15-2006, 11:01 PM   #1
west_minist
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Default Reflashing w/ OpenECU tools

Is there anyone using the OpenECU flashing and editing tools?

If so, lets chat on tuning
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Old 05-15-2006, 11:22 PM   #2
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Yes, I am. I've used Enginuity and flashed my car a few times with some changes.
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Old 05-16-2006, 12:09 AM   #3
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what kind of methodology do you use when "tuning"? I've figured out the flashing part.. I'm just lost with the whole changing values part...
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Old 05-16-2006, 01:16 AM   #4
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Quote:
Originally Posted by mr_yellow
what kind of methodology do you use when "tuning"? I've figured out the flashing part.. I'm just lost with the whole changing values part...
I saw your post on the Enginuity site. There is something seriously wrong with your flash, as you shouldn't be seeing KC values like -12 over and over again at low loads and in vacuum. I think your map is jacked, but the only thing questionable I saw was that rev ignition limit - I haven't seen that on some of the other XMLs, like XMLwrite, so it might be something you don't want to experiment with. Do you have any logs with your stock map? If I were you, I would only copy over the values that are on the Cobb map and nothing else.

Anyway, I learned a lot from guys on this site - crazymikie, drees, jon ct, riftswrx, I'm sure I'm leaving out someone. Do some searches in this engine management, you'll find a wealth of discussion. What I've learned is that you should get your combo about where you want it and then get a custom tune. Then from there, you can make small changes as needed. Starting from stratch with mods and doing a road tune, you really have to know what you're doing and EGT, wideband, knock light are musts, and even then you can't match a good dyno tune by experienced tuner. Best to at least start out with an off-the-shelf map at a minimum and go from there.
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Old 05-16-2006, 04:51 AM   #5
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I've only been playing with this stuff for a week or two now so i'm still very early on in the game... I've got a ton of reading to do but it's kinda hard to hear that there's no DIY solution that can't replace a good dyno tune.

hehe.. I'm kinda embarressed being such a n00b at all of this... As for my post on enginuity.org, it was very puzzling... I have lots of logs with the stock maps and i'd only ever see negative knock correction values when I coast around at super low rpms... I like to take 5th at about 60 km/h. I've kinda gotten into a habit of shifting super early and only shifting down when absolutely necessary.

Eitherway, I'd still be able to maintain a high IAM with the stock maps with that driving style so for the 5-10 minutes I ran with the "upgraded" maps, I couldn't believe that it was knocking so much so early (after reading the logs). I wasn't shifting super early but the hesitation got me so scared i didn't try anything risky.

As for the maps I should copy over to use as a base, I basically blindly copied all the maps that differed from the stock maps (about 10 total maps)... Should I only stick with a subset? the big three: timing, fuel, and boost(target and WG-DC) and forget about all those other ones like boost rev limit, or others (damn, i can't remember the names and I'm too lazy to turn on my lappy to check...)?

Another thing is that I wonder if i've got enginuity properly supporting the ECU ROM version i have. The majority of the maps out there are the 02 WRXs and 04 and 05's. i wonder if support for the 03 maps have suffered because of this. I figured since enginuity read an 03 rom properly it should be writing it properly too... but that's something I'm not sure how to check.

Anyways thanks for the feedback! As for my goals... I'm a cheap-ass guy so bang-for-the-buck is the most important to me. so most hardware mods are out of the question. the most I'll probably ever do is open up the exhaust with a up/dp/exhaust... This is why i'm so intrigued at engine management. It's like free power (sorta)!.
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Old 05-16-2006, 05:17 AM   #6
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I am currently working on an STI In canada. Check openecu.org under my name.

PM your stock map with your new logs.

For the new logs perform the following funtions:-

1) Drive normal
2) Drive aggressive
3) Log 3, 4 & 5 gear pulls from low rpms as possible @ WOT.

It seems you know how to flash.

I will send you a new rom where you can look over and upload.

Send me the rom you are on w/ a detail logs with load, rpm, boost and so on.

I will need that info in the logs above.
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Old 05-16-2006, 11:02 AM   #7
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Quote:
Originally Posted by mr_yellow
I've only been playing with this stuff for a week or two now so i'm still very early on in the game... I've got a ton of reading to do but it's kinda hard to hear that there's no DIY solution that can't replace a good dyno tune.
It's not impossible, but it takes a lot of time, experience and equipment (notably EGT, wideband, knock light). Some guys have even rented out dynos for a few hours so they can tune their own cars. On the street, it is really difficult to quantify incremental gains made by small changes. For example, you might be adding some boost and on the dyno you could see what gains you were getting from x amount of boost. You might reach a point where increasing the boost past a certain point (say 17 psi) would result in very little increase in HP. Maybe increasing to 18 psi nets you less than 1 hp. The same can be done with timing and fuel at different loads/rpm as well, especially with the Protuner stuff, where they can do real time tuning.

Quote:
hehe.. I'm kinda embarressed being such a n00b at all of this... As for my post on enginuity.org, it was very puzzling... I have lots of logs with the stock maps and i'd only ever see negative knock correction values when I coast around at super low rpms... I like to take 5th at about 60 km/h. I've kinda gotten into a habit of shifting super early and only shifting down when absolutely necessary.

Eitherway, I'd still be able to maintain a high IAM with the stock maps with that driving style so for the 5-10 minutes I ran with the "upgraded" maps, I couldn't believe that it was knocking so much so early (after reading the logs). I wasn't shifting super early but the hesitation got me so scared i didn't try anything risky.
Well, I didn't mean you were knocking. Some negative knock correction is normal off-boost and is occasionally seen in most people's logs, but it shouldn't be real knock. The ECU does not use those negative number to lower your IAM - you have to be under a certain minimum amount of load (like 1.0, IIRC). But you logs were showing -12, -10 over and over again in each row. I've never seen that before. Did you log with your stock map before? If you have, then post them up. If not, revert back to the stock map and log and see if you get the strange KC values.

Quote:
As for the maps I should copy over to use as a base, I basically blindly copied all the maps that differed from the stock maps (about 10 total maps)... Should I only stick with a subset? the big three: timing, fuel, and boost(target and WG-DC) and forget about all those other ones like boost rev limit, or others (damn, i can't remember the names and I'm too lazy to turn on my lappy to check...)?
I looked at your map and it looked ok. The rev ignition limit thing I wasn't sure about though. It's possible that one of the other tables has something screwy about it in the XML. Which XML are you using? I would copy over the primary maps - WDC, boost, ignition, fuel and also the two turbo dynamics tables. I wouldn't worry about the others like boost limit, egt limit, etc. for now, which wouldn't be an issue for stage 1 anyway.

You do have the right idea, though. Starting with a staged map and tuning from there.
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Old 05-16-2006, 01:20 PM   #8
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I am using EcuEdit for map editing, now just switched to an XML definition created by XMLWrite, and use Ecuflash to reflash/read. I tend to post on openecu.org a lot.

I had already modified the DBW table to get rid of the throttle plate closing at 7000rpm, raised the outright rev limiter, modified wastegate duties, etc, although I am still using my UTEC for primary tuning.

I just installed new injectors and am going to attempt to run a 100% openecu reflash only, taking the UTEC out of the equation (for now, I still want some UTEC features, but I want the flash to work on its own first off). I'm curious how much just injector scaling will take care of it (Perrin modified injectors).
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Old 05-16-2006, 01:24 PM   #9
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Good guys,

Keep more of the good stuff coming.

I would really like to see some problems logs w/ custom roms.
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Old 05-16-2006, 04:22 PM   #10
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Thanks for all the input guys! this is getting very interesting! I'll try to find some time to get the logs for those runs soon..
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Old 05-16-2006, 08:36 PM   #11
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I literally flashed to ECU only fuel injector scaling between runs at the dragstrip tonight after getting pissed off at the craptastic things that happen when you use UTEC fuel injector scaling. Namely, the ECU wants to run stupid high timing since it thinks very little air is getting in, so on off-throttle, the transition from UTEC to ECU timing goes from something like +20 to +46 while still in nominal load, causing sick nasty knock. I honestly don't know how you could ever run a UTEC with large injectors without this problem and popping huge knock events every time you eased off the throttle and went back to ECU control.

I am going to spend the next few weeks with the UTEC turned off and try to run OpenECU flash only. I'll probably be posting more on openecu.org, though.
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Old 05-17-2006, 12:22 AM   #12
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I know Freon, but I noticed that there were some noise here and I thought that it would be nice to start a thread on that.
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Old 05-17-2006, 12:23 AM   #13
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Quote:
Originally Posted by mr_yellow
Thanks for all the input guys! this is getting very interesting! I'll try to find some time to get the logs for those runs soon..
No prob.

I look forward to them
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Old 05-17-2006, 02:30 PM   #14
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I made the IGN rev limit change back to the stock value and tried it out.

The maps worked! no nasty knock/det. Car was running and ran relatively smooth. I definitely noticed a bigger kick in 1st and 2nd gear when going into boost.

I got a bunch of logs but I don't want to use them since I'm running on a relatively bad tank of gas. Even with the stock maps, my IAM was hovering around 5 with this gas. with the new map (and lots of hard driving), i'm only at 8. I drove hard, easy, and did a few 3rd and 4th gear pulls.

west_minist, If you think you can still use the logs, just let me know.
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Old 05-17-2006, 02:37 PM   #15
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I PM u.
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Old 05-17-2006, 02:46 PM   #16
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Send me both Stock and your tune rom.
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Old 05-17-2006, 05:14 PM   #17
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Rev limiter fix and the drive by wire throttle shut fix I put in definitely work. I just raised it to 7100. I've run it up to 7100 no problem.

Car is running great on Perrin modified STI injectors purely by changing the injector scaling value. Had to try three times to find a good value, but half the problem is figuring out how the ECU stores injector scaling. It is not in CC/min or lbs/min, it is an ontime coefficient, so the value actually needs to go DOWN with larger injector. It is easy enough to invert it, but finding the right coefficient for that is under discussion. I think I've settled on what it is, but some disagree, fair enough. Either way, Perrin modded STI USDM yellowtop sidefeed injectors are just about right on +50% flow of stock.
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Old 05-20-2006, 02:32 PM   #18
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Default OpenECU.org and tactrix.com down?

You guys visit either of these sites today? I can't get to them, just got the cable, need the drivers.

-Jason
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Old 05-20-2006, 02:43 PM   #19
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Old 05-22-2006, 04:54 PM   #20
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The newest Ecuflash (1.27) includes and installs the drivers. Openecu.org had been flaky, but seems to be running better the last few days.
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Old 05-23-2006, 08:56 PM   #21
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mr_yellow,

How is the tuning going?

I did a rom pull with the new one and it works very nice.
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Old 05-23-2006, 09:22 PM   #22
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I have a usdm 2005 sti. I have the cobb access port and i installed version 1.27 ecuflash. I connected the green connectors but I can't read the rom. What am I missing? I'm able to use the cable for logging on ecuexplorer just fine.
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Old 05-23-2006, 10:31 PM   #23
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Found out I have to have a different cable. I ordered one from Tactrix. Can't wait until it gets here
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Old 05-23-2006, 10:43 PM   #24
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Did you get the flash block connector or jumper the flash block?
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Old 05-23-2006, 11:13 PM   #25
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No I thought I read that I don't need that for a 2005 sti.
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