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ACD Flashing/tuning

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Old Feb 27, 2009 | 12:36 PM
  #1  
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ACD Flashing/tuning

Hey guys... the locals here in SoCal have been developing and are actually implementing a form of ACD flashing to get more aggressive lockup for the OEM ACD units.

Here's the thread:
http://www.socalevo.net/forum/index.php?topic=73181.0

Any input, thoughts, experiences with such modification? Gruppe-S is the one offering it, and I am contemplating on testing it out tomorrow at their offices.
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Old Feb 27, 2009 | 02:09 PM
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I hope we become able to do this with ECUFlash! How is Gruppe-S performing the reflash?
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Old Feb 27, 2009 | 02:14 PM
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Originally Posted by tanK
Hey guys... the locals here in SoCal have been developing and are actually implementing a form of ACD flashing to get more aggressive lockup for the OEM ACD units.

Here's the thread:
http://www.socalevo.net/forum/index.php?topic=73181.0

Any input, thoughts, experiences with such modification? Gruppe-S is the one offering it, and I am contemplating on testing it out tomorrow at their offices.
I read thru the links posted on the socal.net, but the video links didn't work. I'm very interested in more information about flashing the ACD.
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Old Feb 27, 2009 | 02:20 PM
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Ohh please do.
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Old Feb 27, 2009 | 09:07 PM
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This is very interesting. I would love to get in on this. Alot of these symptoms they describe my car does on the street or track and I didn't know it could be contributed to the ACD.
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Old Feb 28, 2009 | 06:39 AM
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It looks like they are allowing the public to test today - if there is general concensus that this allows for an increase in rotation without loss of straight line stability/driveability, I will likely try this over the TRE rear diff.
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Old Feb 28, 2009 | 05:46 PM
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That thread makes everyone sound like they think the flash is changing the torque split (which we know is not how ACD works). But I have ridden in cars with ralliart controllers, they do feel different.
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Old Mar 12, 2009 | 09:54 AM
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So I seen in vendor marketplace Gruppe-S is now selling the ACD Reflash. Has anyone tried this yet or know someone who has? Any feedback?
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Old Mar 12, 2009 | 10:00 AM
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awesome! i'm definitely going to keep an eye on what this can do

edit: what can this exactly do?
front and rear wheels stay locked at 50/50 correct? I wonder if this will affect the mid corner understeer of CT9A's

Why didn't I see an announcement for this on EvoM?

Last edited by kyoo; Mar 12, 2009 at 10:05 AM.
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Old Mar 12, 2009 | 10:09 AM
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https://www.evolutionm.net/forums/ev...available.html
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Old Mar 12, 2009 | 10:11 AM
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lol thanks
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Old Mar 12, 2009 | 10:41 AM
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No problem, I didn't do that to be a jerk by the way. I happened to stumble upon it, then I did a search and found this thread. Not much info/buzz about it on EvoM. I have a feeling the reflash will help but there are no concrete numbers to be seen. I'm kinda between this and a TRE rear diff, I know the TRE you will feel the difference with the reflash I'm affraid it could be snake oil (though I don't believe it is).
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Old Mar 12, 2009 | 11:04 AM
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I dunno it seems to have some pretty substantial results - I'll wait a little on it to see more results popping up.
I think both the tre rear diff and this acd reflash could work in conjunction though, no?
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Old Mar 12, 2009 | 11:15 AM
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Yes, the reflash is for the Center Diff and TRE is for the rear diff. For me however, running on street tires, I'm not sure if I want to do both at the same time. I would go from a understeer pig to oversteer wh0re I would presume (if both work as advertised). Another thing is driving skill wise I'm probably a hack at best, I'm sure the more experienced drivers would love both. I might even like both just not sure is all.
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Old Mar 12, 2009 | 11:22 AM
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hmm.. hopefully there would be some control to that.. If you get the Tre 1 way I believe it only works when you're on the throttle
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