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Old 01-11-2011, 04:03 PM   #276
ericsson
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Will this work for 08+ models with non-modified ECUs?
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Old 01-12-2011, 01:04 PM   #277
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I tried it last night.. I did not notice anything different..
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Old 01-20-2011, 10:23 AM   #278
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nice i will try this week when i go to the dyno. thanks for the trick
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Old 01-26-2011, 10:51 PM   #279
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I'll give this a try.
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Old 01-31-2011, 07:10 AM   #280
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Considering the original post was in 2003 and how much the current ECU's in newer models are; I wonder if this is still a valid technique at all and if it's reading the same tables for the ignition advance multiplier. I can't see any harm in trying it if you're going to reset the ECU anyways (I've tried it a time or two and it seemed to run just fine, but not a real difference from the butt-dyno or ear inspector, lol). If there's anyone with some detailed information on this reset technique and the newer ECU's please chime in! Thanks
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Old 02-16-2011, 11:28 PM   #281
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I have a WRX 2001 and it really works!


Regards,
Toledo
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Old 03-24-2011, 01:20 PM   #282
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What all vehicles this work on? I got a 94 legacy turboed will it work for it?
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Old 03-28-2011, 03:37 AM   #283
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Quote:
Originally Posted by Smokin' Joe View Post
Considering the original post was in 2003 and how much the current ECU's in newer models are; I wonder if this is still a valid technique at all and if it's reading the same tables for the ignition advance multiplier. I can't see any harm in trying it if you're going to reset the ECU anyways (I've tried it a time or two and it seemed to run just fine, but not a real difference from the butt-dyno or ear inspector, lol). If there's anyone with some detailed information on this reset technique and the newer ECU's please chime in! Thanks
I don't believe this is valid for 08+ wrx's. Eric from Torqued Performance has posted on the 3gwrx forum an explanation of the IAM for a 3rd gen wrx:

"Dyn. Adv. Mult. (DAM) or IAM [RR]

This is used as part of Subaru's knock control strategy. The Subaru ECU pulls timing to reduce knock and in extreme cases can richen the fuel mixture and disable boost control leaving you at wastegate boost. This value is multiplied to the timing advance table and added to the Base timing table to create the maximum timing advance. If the value is 1 full timing advance is being used. If the value is less than 1 only that fraction of the timing advance table is being used.

ex. If the DAM equals .5 and the timing advance table calls for 5 degrees advance. .5*5 = 2.5 degrees will be added to the base timing.

What you need to know. The DAM is set in a stock ecu to .5 after ecu reset. The tuner may modify this value to start at any value they want. Generally as you drive around this value will increase to 1. You will need to be at engine loads that apply timing advance to raise this multiplier as well as other factors. If your car does not raise this DAM or reduces it. It is because of feedback from the knock sensor. This is an indication that either knock is occurring or false knock is being picked up through the knock sensor. It is a safety precaution when bad gas or low octane gas is used.

If the value drops below .35 the alternative open loop enrichment table is used. This is a much richer table then the normal open loop enrichment table.

If the value drops below .2 the ECU disables Boost control. This will leave you car running at wastegate boost and you will always have 0% Wastegate Duty Cycle. It will not be turned back on till the DAM increases to above .65.

The value you are looking for is a DAM of 1"

The original poster is referring to the IAM being a minimum of 8 and a max of 16, and Eric's post from 3gwrx forum is saying the it should be 0.5 to 1 for a 3rd gen wrx.

I have a 2011 WRX with 500kms on the odometer so far. I did some logging with romraider and it shows the IAM is a value of 1. So it seems it doesn't take long at all to go from the default 0.5 to 1.
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Old 05-07-2011, 02:04 PM   #284
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Quote:
Originally Posted by rustywrx View Post
I have a 2011 WRX with 500kms on the odometer so far. I did some logging with romraider and it shows the IAM is a value of 1. So it seems it doesn't take long at all to go from the default 0.5 to 1.
Today we've been modifying maps in my 2008 WRX and after uploading a map once again the technique is to get to the road with no boost, then put the car into 2nd gear at low 15 mph speed, then use 50% throttle and once car pick up to this level, increase throttle steadily down to the floor.

We get immediately IAM of 1, if everything is okay with your map of course. These cars are "learning" really that fast.
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Old 05-09-2011, 07:28 PM   #285
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Quote:
Originally Posted by Smokin' Joe View Post
Considering the original post was in 2003 and how much the current ECU's in newer models are; I wonder if this is still a valid technique at all and if it's reading the same tables for the ignition advance multiplier. I can't see any harm in trying it if you're going to reset the ECU anyways (I've tried it a time or two and it seemed to run just fine, but not a real difference from the butt-dyno or ear inspector, lol). If there's anyone with some detailed information on this reset technique and the newer ECU's please chime in! Thanks
the knock control is basically the same....so yes it still works.

But there is harm in it....because if your car is not happy at an IAM of 16 (16bit ecu) or 1 (32 bit ecu) then you will make it knock everytime you do this "trick"

Quote:
Originally Posted by rustywrx View Post
I don't believe this is valid for 08+ wrx's. Eric from Torqued Performance has posted on the 3gwrx forum an explanation of the IAM for a 3rd gen wrx:

The original poster is referring to the IAM being a minimum of 8 and a max of 16, and Eric's post from 3gwrx forum is saying the it should be 0.5 to 1 for a 3rd gen wrx.

I have a 2011 WRX with 500kms on the odometer so far. I did some logging with romraider and it shows the IAM is a value of 1. So it seems it doesn't take long at all to go from the default 0.5 to 1.
It still works. As i just posted the IAM is just different on the older 16 bit ecus as todays 32 bit ecus.

The 16 bit ecus used 16 as 100% advance....12 (75%)....8 (50%)....4(25%)

the 32 bit ecus use 1.0 as 100% advance....0.75(75%)....0.50(50%) and 0.25 (25%)
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Old 05-09-2011, 07:29 PM   #286
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Quote:
Originally Posted by Supercharged View Post
Today we've been modifying maps in my 2008 WRX and after uploading a map once again the technique is to get to the road with no boost, then put the car into 2nd gear at low 15 mph speed, then use 50% throttle and once car pick up to this level, increase throttle steadily down to the floor.

We get immediately IAM of 1, if everything is okay with your map of course. These cars are "learning" really that fast.
what is the point in doing that?

if you're modifying your ECU why dont you just make the IAM 1 to start off with in the map?
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Old 08-03-2011, 08:47 PM   #287
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not to jack this thread.. new contacts are killing me its tough to read but will this work for a NA motor? i keep seeing boost related things so im curious.. thanks
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Old 08-25-2011, 11:19 AM   #288
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Quote:
Originally Posted by Phatron View Post
what is the point in doing that?

if you're modifying your ECU why dont you just make the IAM 1 to start off with in the map?
+1. I'm too impatient between revisions when I'm doing a tune so I always set the initial value to 1 or 16.

Even if you use the stock initial value, your [happy] car will "learn" an IAM value of 1 or 16 within minutes anyway. You do not gain anything by this trick.
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Old 09-01-2011, 03:06 AM   #289
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Quote:
Originally Posted by Phatron View Post
if you're modifying your ECU why dont you just make the IAM 1 to start off with in the map?
This.

The description of IAM in Vishnu's post was incorrect, and the his learning workaround is unnecessarily cumbersome. It's time for a sticky that reflects today's better understanding of what IAM is and how to completely skip that part of the reset process.
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Old 09-21-2011, 08:25 AM   #290
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good job,thanks...
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Old 09-22-2011, 02:59 AM   #291
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I just realized that I forgot to post a link to the new thread:

http://forums.nasioc.com/forums/show....php?t=2235130

It does the same thing suggested in this thread, but it works faster and with less effort.
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Old 01-25-2012, 12:38 PM   #292
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Wow, i just wasted so much time reading a Sticky from beginning to end.
Why is this a sticky again if it is no longer relavant?
ECU's on WRX 08+ dont work the same way as older cars, so it should not be a sticky.
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Old 01-25-2012, 01:25 PM   #293
Phatron
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^^ why do you say the 08+ doesnt work the same? The IAM is still there...and still not 1 from the factory....

but yes this process is very out dated
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Old 01-25-2012, 04:15 PM   #294
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Quote:
Originally Posted by Redley78 View Post
Wow, i just wasted so much time reading a Sticky from beginning to end.
Why is this a sticky again if it is no longer relavant?
ECU's on WRX 08+ dont work the same way as older cars, so it should not be a sticky.
That is a very good question.

However, the 08+ cars aren't really any different, and the methods I posted in the alternative thread will work on older cars too.
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Old 03-18-2012, 09:17 PM   #295
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Hi
I have a 2011 WRX and used your procedure and YES there was an initial increase of probably as you say 10 to 15 % . but then it seemed as though some of it disappeared ( possibly my thirst for more power)
THX
Quote:
Originally Posted by NSFW View Post
That is a very good question.

However, the 08+ cars aren't really any different, and the methods I posted in the alternative thread will work on older cars too.
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Old 03-23-2012, 02:27 PM   #296
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I would sure love a video
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Old 03-23-2012, 05:38 PM   #297
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^Same
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Old 03-24-2012, 01:01 AM   #298
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Default Why a Video??

Sorry but why would you need a video do perform such a simplistic procedure?

Quote:
Originally Posted by Onejamasubaru View Post
I would sure love a video
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Old 03-27-2012, 01:40 PM   #299
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How does this work on one an N/A set up reflash with Cobb AP and Supercharged at 10 psi 2006 2.5i. I know once knock is noticed it can take weeks for ecu to learn so I just reset and car seems strong again no hold back from ecu. Yes I know turbo vs what im talkin bout N/A
But all ecu's learn and if I'm not mistaken newer 2.5i's ecu's bit rate is still over ej205's so maybe learning curve acceleration is achievable?? Anyone in the tuning department care to chime???
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Old 01-05-2013, 08:27 PM   #300
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I did what you said. Seems like it pulls a little better, but wanna make sure I did it right.

Unplugged the negative wire off the battery. Pressed the brakes for about 6 seconds, them put the negative back on, drove off and didn't boost till I got to third gear and reved to 2600 rpms, after I did that I looked at my gauge and all the lights came on the gauge and immediately it turned back on. Was that right? It had to do that?
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