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Old 05-23-2015, 03:30 PM   #51
69subaru360
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Well this is back from the dead.

I'm still willing to buy a Z32 maf chip. Just let me know when it's ready and a price.
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Old 06-09-2015, 10:20 PM   #52
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I think if you want to go further with the EJ20g, you should look at ESL tuning. Keeps the stock ECU and knock sensor, but allows Z32 MAF and custom tuning.
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Old 06-16-2015, 02:37 PM   #53
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Just thought I'd update this since I don't know if Rob checks these boards much any more... I e-mailed him and he's still working on the tune. Testing session is scheduled for this weekend.
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Old 06-16-2015, 05:51 PM   #54
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Yep, this right. I haven't been monitoring this thread for a while. Brett sent me an email so I thought I would come here and confirm.

I am finally getting my logging setup the way I want and I have carved time this weekend to collect what I hope is enough data to move forward. The time remaining is just time running the tune and gaining trust that it is safe and reliable. I am so very paranoid of putting something out there that breaks somebodies motor.

Besides my own use, I might have my first potential guinea pig waiting in the wings (even though he may not know it yet, haha).

-Rob
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Old 06-20-2015, 11:30 PM   #55
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For those asking for an update, I had a good bit of testing today. My logging setup consisting of an Innovate LM2 (WB+5channels) chained with an LMA3 (5 additional channels) seems to be working well. I probably spent 10x as long playing with the logs than actually testing on the road. So far so good. Even with a very rough fuel mapping, the car starts, idles, runs up to WG boost levels with the z32 maf surprisingly well. It helps that I have a good ignition map to start with. Next up is shaping the fuel map more and then pushing up the boost. Fingers crossed.

-Rob
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Old 06-25-2015, 09:26 PM   #56
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I'm interested in this once you feel it's safe.
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Old 06-25-2015, 11:18 PM   #57
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I've been collecting parts for the 550 tune, I may have to add a Z32 MAF to that list......but in reality, I like having a reliable transmission at the 550 tune level.....wonder how much these TD05's are good for on our engines?
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Old 06-26-2015, 12:37 AM   #58
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Quote:
Originally Posted by CO S13 View Post
I've been collecting parts for the 550 tune, I may have to add a Z32 MAF to that list......but in reality, I like having a reliable transmission at the 550 tune level.....wonder how much these TD05's are good for on our engines?
This is a good question. I am also curious to see how far the yellow injectors can go.

-Rob
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Old 07-05-2015, 11:17 AM   #59
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Quote:
Originally Posted by rob View Post
This is a good question. I am also curious to see how far the yellow injectors can go.

-Rob
I know you are known for your reliable tunes. What duty % will you cap the 550's at? I usually won't run them past 80-85% when I tune. I'm guessing the turbo will run out of efficiency before the injectors max out.
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Old 07-05-2015, 11:46 AM   #60
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Duty cycle is a calculated number, it's not entirely accurate. 100% isn't always static.

That said the 16G turbo can make more power than the STI injectors can flow fuel and it also can make more power than the stock engine, particularly the rod bolts, can reliably handle long term.

Mine made 289 whp with the stock MAF. I'd like to bump that to about 320 with a Z32. I feel like that gives me a safety margin. It's a little risk, but not more than I can accept.
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Old 07-06-2015, 04:52 PM   #61
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Quote:
Originally Posted by CO S13 View Post
I know you are known for your reliable tunes. What duty % will you cap the 550's at? I usually won't run them past 80-85% when I tune. I'm guessing the turbo will run out of efficiency before the injectors max out.
I don't have a specific target duty cycle that I cap at. It is true that after a certain point you lose accurate control. My opinion is that if the injector characteristic are well known, are clean and have been tested for flow, it's usually ok to push them close to 100%. Of course this is requires paying attention to AFR, but typically there is a bit of headroom before the mixture gets dangerous.

In my recent z32 testing session, I set a boost target of ~20psi and it looks like the 550's were up around 92% DC. I think they will be done by 22psi on the TD05 turbo. I am heading out of town on business travel, so haven't had a chance to really study the data. The good news is that now at full boost, it is running quite well, even with the current coarse tune.

Quote:
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Duty cycle is a calculated number, it's not entirely accurate. 100% isn't always static.
I don't think I agree, but I am not sure i understand what you are saying. Can you expand a bit?

-Rob
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Old 07-06-2015, 05:19 PM   #62
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IDC isn't an actual SSM parameter. It's a number calculated by whatever logging program you are using. It uses the actual IPW, latency and IIRC MAF G/s in some way.

100% IDC in a datalog isn't necessarily a static always open injector in a subaru. They can run as high as 130%. Most people seem to try to keep the IDC number to 110 or so. But the ECU will still be adding fuel on some well over 110. You'll see the AFR still continue to richen as the IDC number goes from 110 to 120 on some for example.
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Old 07-06-2015, 06:15 PM   #63
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Quote:
Originally Posted by 69subaru360 View Post
IDC isn't an actual SSM parameter. It's a number calculated by whatever logging program you are using. It uses the actual IPW, latency and IIRC MAF G/s in some way.

100% IDC in a datalog isn't necessarily a static always open injector in a subaru. They can run as high as 130%. Most people seem to try to keep the IDC number to 110 or so. But the ECU will still be adding fuel on some well over 110. You'll see the AFR still continue to richen as the IDC number goes from 110 to 120 on some for example.
Oh, I see. I am logging directly at the sensors, so the DC number I see is the actual DC of the injector which cannot be above 100%

-Rob
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Old 07-06-2015, 09:28 PM   #64
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Got it. So it looks like the injectors will be done at about 22-23 psi boost. If that is 320ish WHP, that would be a nice upgrade and about as hard as you really want to push one of these engines stock internal parts anyway. Seems like it will be a nice setup and worth it.
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Old 07-07-2015, 12:58 PM   #65
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I haven't done any open source stuff so I've only used stand alones that rate as Rob stated above, 100% is just that. I tend to stay in the sage 80% range mainly due to customer maintenance issues. I know brand new injectors are typically safe to run closer to max but when it comes to older used and possibly unclean injectors I can't count on those parts to perform and don't particularly like being blamed for a poor tune when it's a hardware issue that I had no part in.

Most of us would send in a used set of STI injectors to get cleaned and checked before installing your 550 tune, but I can't tell you how many people I know that just buy used parts and slap them on, including injectors with possibly 200K miles on them.
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Old 07-07-2015, 12:59 PM   #66
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I haven't done any open source stuff so I've only used stand alones that rate as Rob stated above, 100% is just that. I tend to stay in the sage 80% range mainly due to customer maintenance issues. I know brand new injectors are typically safe to run closer to max but when it comes to older used and possibly unclean injectors I can't count on those parts to perform and don't particularly like being blamed for a poor tune when it's a hardware issue that I had no part in.

Most of us would send in a used set of STI injectors to get cleaned and checked before installing your 550 tune, but I can't tell you how many people I know that just buy used parts and slap them on, including injectors with possibly 200K miles on them.
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Old 11-06-2015, 10:58 AM   #67
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It's been about 4 months, just curious if there's been anymore progress. I'm not in a hurry just like reading the updates. I'm in the process of rebuilding my trans right now. I have everything for the 550 tune waiting to go in but I'd rather run the Z32 tune if its available when I'm ready.
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Old 12-31-2015, 10:51 PM   #68
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bump. still curious about this!
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Old 01-23-2016, 11:25 PM   #69
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Bump.
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Old 01-24-2016, 01:30 PM   #70
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I'm interested as well. I have my car down at the moment doing all kinds of additional work to it. Now would be a good time for me to put it back together with a new tune.
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Old 03-01-2016, 01:01 PM   #71
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I hit a bit of road bump toward the end of last year. To make a long story short, my supplier ran out of eprom chips and I was basically stuck for a few months with backed up orders and focusing on figuring a chip alternative solution. That's a story for a different day.

I have semi-recently gotten back to the z32 tune. Right now I am fine tuning the new MAF calibration and I should have that where I want it very soon. I am seeing fueling errors of 0- 4% of target AFR. I would like to get that perfectly dialed , then I need to fine tune the actual fueling and ignition maps. It starts, idles and runs as stock. It is completely transparent.

After more logging sessions, I see the 550 injectors are maxing out at between 20-21 psi at higher RPM (@~11.3AFR). I need to think about the next logical injector step up. To give you an idea on the headroom of this MAF sensor, this is only about 50% of the max flow. So, yeah there will never be a need for a bigger MAF

If all goes well, I should have a tune out to my beta tester in a week or two.

-Rob
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Old 03-10-2016, 02:20 PM   #72
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good to hear this is still in the works!
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Old 03-10-2016, 04:56 PM   #73
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I've got an EJ20G STi I'm putting back together in the next few weeks if you need *another* beta tester
i'd just need 550cc injectors. and a z32 maf. and a new intake. and a boost controller.
perhaps i'm not a good candidate
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Old 03-10-2016, 07:44 PM   #74
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I'm still putting mine back together. All I need is a Z32 MAF. Everything else is ready.

Looking forward to it.
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Old 03-16-2016, 06:18 AM   #75
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I volunteer to be guinee pig to test your setup under European conditions with European fuel
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