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Old 09-14-2005, 06:51 PM   #1
crazymikie
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Default Anyone with CL/OL problems on 04/05 WRX

I've been using the tools over at openecu.org and have come up with a reflash that will eliminate the CL/OL delay present in the 04/05 WRXs. I've tested this on 3 different cars now and am happy with the results.

First off, I should thank Jeramie- he was good enough to test 20 revisions of this flash. We luckily got things working just in time for him to have a baby. Congrats!

In any case, if anyone would be interested in trying this, I'd like to collect some more data before posting the ROMs at openecu (measure twice, cut once....). After flashing the car, I'd like to collect some logs and make sure everything is behaving as expected.

I'd like to stick with relatively stock cars- certainly nothing with a non-stock intake. The delay is set up to happen pretty quickly, so this means that the long term fuel trim will not be able to compensate for a non-stock intake as well. This isn't a problem for cars running a stock intake. Also, I don't want to touch any cars that already have a reflash (EcuTek, Cobb, etc). If you are still having problems after a reflash, then you should be contacting your tuner.

Also, if anyone has a wideband, that would be awesome. Right now, I've been going off of the narrowband readings from the front O2 sensor. I have a wideband coming soon, but the sooner I can get some actual AFR readings, the better.

Please let me know if you are interested in trying this. We can back up your ECU image and restore it if you are unhappy.

Thanks!
Mike
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Old 09-14-2005, 07:15 PM   #2
bren wrx
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mikey all the hard work paid off
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Old 09-14-2005, 07:18 PM   #3
Jeramie
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"First off, I should thank Jeramie- he was good enough to test 20 revisions of this flash. We luckily got things working just in time for him to have a baby. Congrats! "

Thanks for the nice words Mike.

If anyone has any questions I'd be more than happy to help.
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Old 09-15-2005, 09:37 AM   #4
Jeramie
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Humm? No interest?

This is the way the car "Should" have came from the factory, and it's free! Just surprised here is no one interested?
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Old 09-15-2005, 09:55 AM   #5
JGard
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Hmm... I went ahead and installed the Cobb Accessport stage 1, and coupled with a grounding kit, I don't have any signs of that problem (which was very noticeable when I first bought the car)
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Old 09-15-2005, 10:13 AM   #6
crazymikie
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The Cobb stage 1 and 2 reflashes fix the problem as well- this is just a free alternative to people who don't want to spend money on an AccessPort right now.

The only thing I've modified is the CL/OL behaviour, so it's not like it's a Stage 1 map or anything like that, although people say that throttle response is much improved. In fact, someone kept thinking they were in lower gears because the car actually responded to the gas pedal

Mike
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Old 09-15-2005, 10:36 AM   #7
fireball_jones
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Interested, but I just recently ordered an accessport. Hopefully you can find some people to try it out, it does get a bit annoying telling your passengers your car is, "just thinking about what to do next... give it some time."
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Old 09-15-2005, 10:55 AM   #8
Jeramie
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"it does get a bit annoying telling your passengers your car is, "just thinking about what to do next... give it some time.""

lol!!!
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Old 09-15-2005, 12:18 PM   #9
TreeSki
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I was one of Mike's original testers, (the only local), and I have to say it's a remarkable difference in the car. No more noticable delay, no more det. during WOT upshifts...the car runs smoother and feels (butt dyno) like it has more power. while it probably doesn't actually HAVE more power, the car responds faster and more smoothly to throttle input, particularly at higher rpms when passing on the highway or on initial acceleration. Mike, thanks again for all the work you put into this!!

P.S. I have that manifold for you sitting in my trunk, I'll get it to you sometime soon now that my elbow is usable and I can shift again...
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Old 09-15-2005, 12:20 PM   #10
Davenow
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Nice how would this work with a UTEC?
I have 95% tuned out the issue, but I would love to resolve it completely.
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Old 09-15-2005, 12:36 PM   #11
crazymikie
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With a UTEC and STi or WRX?

I haven't looked at the STi ROM yet (there is no support yet), so I can't say.

I would think it could be used with a UTEC just fine. For the WRX, at least, It's not as simple as saying at 30% TPS, the switchover happens- there are a whole slew of inputs that affect when, and how long the delay is. There are various combinations of these parameters that you need to have as well. Seems like the Denso guys were up to something when they put the logic in there....

Thanks TreeSki!

Mike
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Old 09-15-2005, 12:40 PM   #12
WRXSleeper
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hmm i have never noticed the delay or detonation with my '04. i didn't think many people got the problem here. i have an uppipe and IC hoses. i do hope to get an AP soon though. where would i need to bring the car to get this done?
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Old 09-15-2005, 12:51 PM   #13
crazymikie
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I never saw det in my car either, however, there is a serious lack of power in the midrange, which this will correct. When you mash the throttle, you get instant response, as opposed to nothing, nothing, nothing, then a sudden surge of power. I'll definitely take some before and after logs to make sure everything is okay.

That being said, I think the 93 octane fuel in the area is good enough to allow for the car to run stoich AFRs under the higher loads. People in CA are not so lucky, though. I never saw det in my car, however, I did see extremely high EGTs in stock form. Another side effect of the fueling delay.

I live in Watertown, MA and work in North Reading, MA. If you are interested, just PM me and we can probably work something out.


Mike
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