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Old 01-10-2007, 05:28 PM   #1
subpreza
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Default On AP2 in the live data mode what is......

...."dynadv"?
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Old 01-10-2007, 05:46 PM   #2
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prolly dynamic advance. on STi's i think it runs from .1 to 1 or something like that. this is the dynamic part of the ECM's iginition timing, and will lower itself when it thinks knock is present. low = knock, high = no knock.
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Old 01-10-2007, 10:34 PM   #3
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the range on the v2 AP is from 0 to about 6.5 is as high as i've seen it go so far. this have any relativity to the advanced multiplier?
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Old 01-10-2007, 10:35 PM   #4
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for that matter, can someone list all the live data gauges? I have them but don't know what they all are, i posted about this but can't find my post. It's not in the manual or on their website.
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Old 01-10-2007, 10:37 PM   #5
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oh i change my answer... if the range is like you said mark, it's prolly not the DAM (like i thought), it is indeed the actual amount of timing added to the base map. which the DAM is used to calculate.

there is dynamic advance (the amount of timing addded).

and dynamic advance multiplier (the number that varies to dictate the actual amout of timing to be added)
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Old 01-10-2007, 10:44 PM   #6
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then what is the difference between "ignadv" & "dynadv"?
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Old 01-10-2007, 10:50 PM   #7
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ignadv is probably the actual timing being applied. IOW's, ignadv should be the total timing, while dynadv is the amount added to the base map to arrive at ignadv.

although i admit i am guessing a little here. i konw how the ECM's iginition system works but i don't know the list of parameters the APv2 has...
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Old 01-11-2007, 04:34 AM   #8
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wgduty i'm guessing is the percentage the wastegate opens to prevent overboost? the highest i can make it go is when it's in 5th and i step on the pedal at about 3k rpms, it goes to 78. the MAF is a weird number too... it hangs out arouns 2-4 at idle but at wide open throttle in say 3rd gear i had it over 200. i know it's not voltage now IGN doesnt do much either... i'll have to list all the other live readings and post them, and if you want me to test something and post it lemme know.
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Old 01-11-2007, 10:38 AM   #9
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Thanks for the educated guesses. I will call Cobb and post up what they say.
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Old 01-11-2007, 11:13 AM   #10
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Check out the AccessECU Tuning Guide Thread (www.cobbforums.com).

There is a PDF linked in there, and it explains Dynamic Advance, Dynamic Advance Multiplier, and Ignition Advance toward the end of the document.

You may be able to find a few more definitions in the StreetTUNER Manuals available on their site.

Quote:
Total Ignition Advance =
Primary Ignition table value for the corresponding RPM and Calculated Load breakpoint. + (DAM percentage * DA table value) for the corresponding RPM and Calculated Load breakpoint. +/- value in Knock Learning table for the corresponding RPM and Calculated Load breakpoint.

This adjustment is made to the Dynamic Advance value and can be seen in a datalog. If your DA value for a particular load point is 8 and your DAM is showing as .50, then you should log a 4 as your DA value. If you do not see 4 in the logged value for DA, this means the Knock Learning table has been populated with a value or your ECU made a final adjustment to ignition advance because the ignition advance for that particular condition (RPM & Calculated Load) is too close to threshold.

+/- adjustment make by ECU within Knock Detection range. Within the Knock Detection range, the ECU can
make a final adjustment to remove ignition advance is it hears the engine noise is getting too close threshold.

Make sense?
There are definitions before this, but what you see above is how they work together.

Last edited by TheRipler; 01-11-2007 at 11:19 AM.
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Old 01-11-2007, 02:15 PM   #11
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my Dyn got up to 7.5 last night... I guess this is a good sign.
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Old 01-19-2007, 01:41 AM   #12
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bump for answers, Ign, Dyn, WG, MAF, I have an idea but some of the numbers aren't correct.
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Old 01-19-2007, 11:59 AM   #13
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Quote:
Originally Posted by MarkRx View Post
bump for answers, Ign, Dyn, WG, MAF, I have an idea but some of the numbers aren't correct.
How so? What kind of numbers are you seeing?
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Old 01-19-2007, 02:12 PM   #14
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like MAF... at wide open throttle it's 204, i know it's not 204 volts. and not 204 cfm. I just want a guide from COBB to tell us what the heck we are looking at!
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Old 01-19-2007, 02:32 PM   #15
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Airflow in grams/second.

See page 56: http://www.accessecu.com/support/st-dbw-userguide.pdf

You may want to look at a streetTUNER guide for your model of vehicle for more precise descriptions. Some things vary slightly from model to model

Example: DBW DAM is .05 - 1.00 in .05 increments, while cable throttle DAM is 1 - 16 in increments of 1.
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Old 01-21-2007, 02:38 AM   #16
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right... i'm DBW and i'im reading 7.5 Not correct, this stuff makes no sense, no answer on cobbforums either. So pretty much everyone with a v2 Ap is clueless.
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Old 01-22-2007, 02:19 AM   #17
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Quote:
Originally Posted by MarkRx View Post
right... i'm DBW and i'im reading 7.5 Not correct, this stuff makes no sense, no answer on cobbforums either. So pretty much everyone with a v2 Ap is clueless.
Dynamic Advance of 7.5deg is not impossible.
edit-> It doesn't mean much w/o DAM, RPM, load, and ignition table settings. More ignition tables than you'd think.

It doesn't make sense to you, but the data may not be useless to your tuner. You may be missing too much information to make sense of it. It may not seem intuitive, but I've found the system to be flexible and (most importantly) safe.

Last edited by TheRipler; 01-22-2007 at 03:17 AM. Reason: multiple ignition tables
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Old 01-22-2007, 03:03 AM   #18
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I agree, i wish cobb woud of explained these live data modes in the freakin manual. Dyn Adv shows 7.5 at WOT.
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Old 01-22-2007, 12:42 PM   #19
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Quote:
Originally Posted by MarkRx View Post
I agree, i wish cobb woud of explained these live data modes in the freakin manual. Dyn Adv shows 7.5 at WOT.
Did you read my quote above? Did you read the links I provided? Cobb has explained their AccessECU technology in quite a bit of detail. Do you have a link to your thread on Cobb's forum?

Dynamic Advance (that you log) comes from a formula. Without more information "dyn adv of 7.5 at WOT" doesn't mean anything. I don't know any other way to say that.
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Old 01-22-2007, 01:24 PM   #20
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yesssssssss i read it. still, the most info i've gotten is from a street tuner PDF to a forrester. Cobb needs to put out a supplement that says Ign = this, dyn adv = this, WG duty measures this... It's like getting features on a cell phone and they don't define them in the manual.
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Old 01-22-2007, 03:17 PM   #21
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The dynamic advance numbers don't mean much if you don't know what the max dynamic advance is in the map.
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Old 07-23-2007, 01:46 PM   #22
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BUMP, seriously I don't know what am I looking at? Which of the live data gauges should I pay attention to? I'm just clueless. At least I know how to read and understand the MPH gauge .
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Old 07-23-2007, 10:27 PM   #23
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without knowing what the dynamic advance values are for a specific RPM and load site, the dynamic advance number that spits out of your AP is useless. and the MAF reading, is Grams/Sec of airflow. 1 Gram/Sec = ~ 1 WHP, If everything else is optimized (fuel, spark etc.)
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