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EBD vs. AYC

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Old Dec 19, 2002 | 09:49 PM
  #1  
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EBD vs. AYC

Just to let you know where I'm coming from, the only experience in an Evo was riding in the back seat of a Evo IV taxi in Taiwan.
Anyways I've been waiting for the Evo for 6 years and been reading all your posts. And was shocked to find that our version wont have AYC or ACD (according to rumors).

I know this subject has been beaten to death already but here are a few of my thoughts.

From the official Evolution site, the USDM version will have Electronic Brake Distribution which is an artificial form of (Limited Slip Differential) LSD by controlling torque transfer using the brake rather than a clutch (like AYC). It performs the same function during deceleration in a corner but cannot cannot achieve the same acceleration out of the corner since EBD locks up the opposite wheel to transfer the torque.

As for the ACD, it uses the same sensors as the AYC and I don't see Mitsubishi putting it in the US version for cost reasons. Mitsubishi is targeting the same market as the 350Z, putting the AYC/ACD as standard would put it upwards 34000-36000. The UK Evo 7 is around 30000pounds which is around 42000 dollars (i think). As the 350Z is priced starting around 27000, it makes sense not to put it in considering most people wouldn't even know it existed.

Anyways, I would like ACD/AYC since here in Colorado the winter weather is pretty crappy to drive in.
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Old Dec 19, 2002 | 10:01 PM
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there are no evo's in taiwan

the only evo you will see in taiwan is a lancer with full mod to an evo

and that's not the real thing

there are only 5 real 100 percnet imported evo in taiwan 3 of them are on track another one belong to my boy at taichung and another i do not know where at

how do i know this cuz my friend taht own the real evo 6 is in the club
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Old Dec 19, 2002 | 11:09 PM
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you're probably right about that. there are a lot of cheap body kits selling on the street in taiwan.
but only 5 evos in taiwan is an exageration.

http://www.ncnu.edu.tw/~s9214020/EVO/evo.htm
pic of evo7(left hand drive) in taipei.
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Old Dec 20, 2002 | 01:53 AM
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if you think about it..how can you know the exact number of evos in taiwan with just the word of mouth?
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Old Dec 20, 2002 | 10:08 AM
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that evo 7 looks liek the real deal to me

or the owner done an excllent job on the body work

but then each owner in taiwan with an real evo most likly register their car at an evo fan club so they all know each other
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Old Dec 20, 2002 | 10:22 AM
  #6  
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Re: EBD vs. AYC

Originally posted by kgen
Just to let you know where I'm coming from, the only experience in an Evo was riding in the back seat of a Evo IV taxi in Taiwan.
Anyways I've been waiting for the Evo for 6 years and been reading all your posts. And was shocked to find that our version wont have AYC or ACD (according to rumors).

I know this subject has been beaten to death already but here are a few of my thoughts.

From the official Evolution site, the USDM version will have Electronic Brake Distribution which is an artificial form of (Limited Slip Differential) LSD by controlling torque transfer using the brake rather than a clutch (like AYC). It performs the same function during deceleration in a corner but cannot cannot achieve the same acceleration out of the corner since EBD locks up the opposite wheel to transfer the torque.

As for the ACD, it uses the same sensors as the AYC and I don't see Mitsubishi putting it in the US version for cost reasons. Mitsubishi is targeting the same market as the 350Z, putting the AYC/ACD as standard would put it upwards 34000-36000. The UK Evo 7 is around 30000pounds which is around 42000 dollars (i think). As the 350Z is priced starting around 27000, it makes sense not to put it in considering most people wouldn't even know it existed.

Anyways, I would like ACD/AYC since here in Colorado the winter weather is pretty crappy to drive in.
EBD does not do what you think. It distributes braking power between the wheels only. It is only activated uder braking. You can think of it as an active balance bar. And again the AYC in a EVO VII is unlike anything that uses the brakes to distribute power.


Erik
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Old Dec 20, 2002 | 03:01 PM
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erikqj is right, EBD is a active brake proportioning system that only works under braking. It CAN be used to tune the balance of the car entering the corner by putting brake bias forward (understeer) or rearward (oversteer, fun!). But most cars are tuned to understeer more with these systems (not saying the EVO is like that, haven't driven one yet!). The advantage of such a system is propper brake bias no matter what the grip level of the road (more grip = more load transfer = more front bias needed)

you know guys the car could still have ACD and AYC for all we know, they could have put out some false info because they ( ) KNEW it would end up on this site in about five minutes.
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Old Dec 20, 2002 | 03:51 PM
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It's correct, EBD is only a brake proportioning system. you can only compare it to a 2-way or 1.5 way LSD during deceleration, and even that is a stretch. Think of it like a computer-controlled brake proportioning lever found in real race cars.

Also true... rumors are often just lies. Just look at the "no FMIC" rumor, which seems to be false now.

Still, why would Mitsu spread rumors of no AYC/ACD if they really plan on putting it in? Is Mitsu thinking, "Let's make all those Evo-fans think their US Evo will suck so they go ahead and buy WRXes, 350Z's, G35's etc. Bwahahahah!!! While we're at it, let's spread rumors that it will only have 200 HP!"
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Old Dec 20, 2002 | 04:28 PM
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The system that was being confused with EBD would be EDL (Electronic Differential Lock) found on Audi quattro cars. Quattros have a Torsen center diff and use EDL to manage side-to-side traction on both front and rear axels should a wheel lose traction.
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Old Dec 20, 2002 | 04:55 PM
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Thanks for the clarifications, you learn something new everyday .
I don't plan on getting a new car for a year so I'm not really worried. Does seem kind of odd that mitsubishi wouldn't put in the AYC (something that's been standard since IV) in the american version.

Also odd how Subaru and Mitsubishi choose not to show their best hand unless the other appears to up the ante. subaru no sti until mitsu's evo, mitsu evo not JDM level until after sti. etc. Why not just beat the other to the punch and release their top cars?
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Old Dec 20, 2002 | 05:17 PM
  #11  
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Still, why would Mitsu spread rumors of no AYC/ACD if they really plan on putting it in? Is Mitsu thinking, "Let's make all those Evo-fans think their US Evo will suck so they go ahead and buy WRXes, 350Z's, G35's etc. Bwahahahah!!! While we're at it, let's spread rumors that it will only have 200 HP!" [/B][/QUOTE]

They'd do it to throw Subaru a curve, remember the STi could come with an active center diff. If Mitsu shows their hand too early it could change Subaru's mind about including it (or not) on the U.S. STi. Trust me, they are VERY interested in the spec of each others cars.
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Old Dec 21, 2002 | 10:54 PM
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Sorree to say this NismoSkylineGTR girl...but you are wrong....there are lots of evos in Taiwan...how do I know this?

hmmm.....because my uncle owns one plus he isn't in a club. Not everyone joins a club.

Anyways its all good!!

Last edited by TwiNpnOy84; Dec 22, 2002 at 01:32 PM.
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Old Dec 22, 2002 | 11:25 AM
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Originally posted by kgen
Does seem kind of odd that mitsubishi wouldn't put in the AYC (something that's been standard since IV) in the american version.
Correct me if I'm wrong, but I'm pretty sure AYC wasn't introduced until the Evo VI (not the IV).
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Old Dec 22, 2002 | 03:40 PM
  #15  
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The AYC was introduced on the Evo IV. Liandrin11, check this PDF document out (if you haven't seen it already). Along with details on the Evo VII, it gives a nice overview of all the Evos throughout the years.

http://www.mitsubishi-motors.co.jp/PDF-E/evo7.pdf
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