07-01-2012, 07:02 PM | #113 |
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I just wanted to thank you all for a great read. Keep it up
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07-01-2012, 07:58 PM | #114 |
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07-01-2012, 08:05 PM | #115 | |
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I doubt John will be able to comment as EcuTek hasn't released anything yet. Arghx7: I also logged catalyst for my dyno runs if you want the *.csv file I can zip it and attach. G
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Last edited by jedibow; 07-01-2012 at 08:08 PM. Reason: Added log |
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07-01-2012, 08:42 PM | #116 | |
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We'll have to wait and see about this. I'm sure they've figured out what buttons to push to lean it out and advance the timing, but beyond that we'll see how well the logic is understood.
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07-01-2012, 09:40 PM | #117 |
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No but just like other subarus the fuel trim can be carried over during WOT. This is most likely seeing.
The EcuTek software is a done software / tuning package. The tuner doesn't get to see the raw address's or lookups. Just a working product that gets updates on a daily basis. John |
07-01-2012, 09:41 PM | #118 | |
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07-01-2012, 09:44 PM | #119 |
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Leaning out the high rpms alone picked up power.
Cam timing also plays a huge roll on the power band of this car |
07-01-2012, 10:54 PM | #120 | |
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When you adjust cam timing does it move the torque dip further forward, or backwards in the rev range, or does it stay consistent as far as RPM is concerned? |
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07-02-2012, 07:18 AM | #121 |
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07-02-2012, 10:49 AM | #122 | ||||
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The issue here is CO emissions on the US06 test cycle. A WOT pull on a chassis dyno is not the same as a driving a US06 test cycle, but the strategies used to meet CO emissions tend to affect WOT control as well. The US06 test cycle doesn't have WOT, but it does have heavy acceleration that can be difficult for low torque small engines that run at high loads. The current standard for this vehicle should be around 8.0 grams per mile, but in a few years when LEV III emissions comes out that may be cut in half. The vehicle still has to meet certain in-use testing requirements 1 year and 4 years from now. So you can't tune the thing on the ragged edge of the emissions standard, or there will be fines and recalls in a few years if enough of the cars fail. That's why you go as lean as you can during transients without exceeding targets for cat temperature and knock. As I mentioned above, there are a lot of ways you can do this depending on how accurate your sensors are and how much manpower you want to put into developing software and engine calibration. I would be surprised if the FA20 just goes from closed loop lambda=1 to open loop enriched based on a couple look up tables while still meeting emissions. These days some kind of intermediate step usually occurs--delay timer, closed loop enriched, etc. I don't want to make some kind of judgment based on insufficient data. Quote:
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The Following User Says Thank You to arghx7 For This Useful Post: | jedibow (07-02-2012) |
07-02-2012, 11:35 AM | #123 | |
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07-03-2012, 07:07 PM | #124 |
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I will be tracking my car this weekend, so I will post new datalogs after, anything in particular you would like to see?
I was planning Intake air temperature, and absolute load would be a good place to reference, I think right now we have a good grasp on timing, and as it is an open track day I will get her nice and hot (I will include Cat temp) G |
07-04-2012, 10:52 PM | #125 |
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Get fuel system status and stock wideband reading working if possible.
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07-04-2012, 11:20 PM | #126 |
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I have fuel status, the wideband still wants to time out? Evoscan issue? I be working on it tomorrow, and Friday. I'll post the csv.
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The Following User Says Thank You to jedibow For This Useful Post: | bambbrose (07-05-2012) |
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