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Another AYC/ACD Discussion

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Old Apr 17, 2003 | 12:08 PM
  #17  
tryandcatchme's Avatar
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From: North America, North East.
Originally posted by Claudius
Hi Guys!

ACD could be fun if it were an adjustable center diff where you can change the amount of power that goes to the rear, but it isnt like that.

AYC is a big heavy rear diff which keeps the car from oversteering and induces understeer. AYC often breaks (there have even been recalls). AYC is VERY expensive and very useless, except for beginners. But then again, beginners shouldnt be driving an Evo...

AYC adds about 50 lbs to the cars weight.

In conclusion: ACD and AYC are unreliable electronic devices that sound cool when you dont have them, but that take away from the pleasure of driving the Evo when you do have them. It cost me $4,000 to remove the AYC. Believe me, if it were any good I wouldnt have done that!
Ill agree toatally, ive been studying AYC and its effects on the Evo, and from the things ive been reading, it is a 54 pound paperweight.

Face it people like bells and whistles!

I wouldent be surprised if Mits made up a Variable Center Diff for the next redesign of the Evolution, to somewhat counteract the DCCD used in the WRX STi.

For me, I dont care much for electronic diff's, a lucky salesman would have my sale for a US Spec Evo RS with a 6 speed when and if they ever come here.
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Old Apr 17, 2003 | 01:46 PM
  #18  
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Originally posted by tryandcatchme
I wouldent be surprised if Mits made up a Variable Center Diff for the next redesign of the Evolution, to somewhat counteract the DCCD used in the WRX STi.
Well, already has a Variable Active Center diff. It has three settings to play with. On the top of the DCCD, those settings are closer to the settings of the DCCD-A in auto mode.

So, by looking it from the different angle Subaru has one auto setting in there, while has three. Subaru also has infinite setting for that center diff (locking wise), while has none. On the top of that, STi has different gearing ratio in the drivetrain (35:65 F/R), while has 50:50.

Similar differences if you ask me...


Fedja
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Old Apr 17, 2003 | 04:15 PM
  #19  
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Ahh yes, that's what I was thinking of VCD not ACD.

So then what are AYC and ACD's good for? Rallying? But not on tarmac?
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Old Apr 17, 2003 | 04:28 PM
  #21  
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Originally posted by Claudius


Pardon?
Variable Center Differential versus Active Center Differential. I think (at least in Gran Turismo 3) you can adjust the amount of torque that goes to the wheels, for example you could have 10% of the power going to the front tires, and 90% going to the rears, so it would handle more like a rear wheel drive car, or you could have any combination you wanted all the way back to 50/50. Not sure if this is the case in real life, but I would think it is. And I'm not sure if this is the same thing as an ACD.
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