How do you know your EVO has front LSD, AYC/ACD?
You can probably tell by looking for hydrolic hoses coming out of your rear diff. Also if you had ACD/AYC you should have a button that change into different settings...i.e. tarmac, gravel, and snow.
ACD helps you make u-turns faster... 
ACD stands for Active Center Differential..
basicly it gives u a better traction and AYC is a system that gives better torque distribution betweent the rear wheels...
ACD stands for Active Center Differential..
basicly it gives u a better traction and AYC is a system that gives better torque distribution betweent the rear wheels...
Newbie
Joined: Oct 2003
Posts: 34
Likes: 0
From: Aurora, Colorado
None of this
IIRC the US version of the Evo does not have any of this. Just plain ole active torsional coupling center diff.
You could look at this as good or bad. Although, IMO less electronic crap is a good thing.
J
You could look at this as good or bad. Although, IMO less electronic crap is a good thing.
J
Evolving Member
Joined: Jan 2002
Posts: 363
Likes: 0
From: Singapore
Originally posted by x7eVoLuTiOn7x
I got the ACD button TARMAC, GRAVEL & SNOW. I thought the US version had them also? Does that mean I also got the AYC if I have the ACD? whats ACD mean?
I got the ACD button TARMAC, GRAVEL & SNOW. I thought the US version had them also? Does that mean I also got the AYC if I have the ACD? whats ACD mean?
Trending Topics
Evolving Member
Joined: Jan 2002
Posts: 363
Likes: 0
From: Singapore
Re: None of this
Originally posted by JaMa
IIRC the US version of the Evo does not have any of this. Just plain ole active torsional coupling center diff.
You could look at this as good or bad. Although, IMO less electronic crap is a good thing.
J
IIRC the US version of the Evo does not have any of this. Just plain ole active torsional coupling center diff.
You could look at this as good or bad. Although, IMO less electronic crap is a good thing.
J
Evolved Member
Joined: Aug 2003
Posts: 554
Likes: 0
From: Durham, NC
Less electronic crap = less stuff that can fail.
You already have a mechanical system -- to add a whole other variable in the form of an electronic system that must work in conjunction with a mechanical system increases your chances of failure.
When you're engineering something complex, simple is almost always easier (but not necessarily better when it is in good working order).
Cabo
You already have a mechanical system -- to add a whole other variable in the form of an electronic system that must work in conjunction with a mechanical system increases your chances of failure.
When you're engineering something complex, simple is almost always easier (but not necessarily better when it is in good working order).
Cabo
Newbie
Joined: Oct 2003
Posts: 34
Likes: 0
From: Aurora, Colorado
Re: Re: None of this
Originally posted by Crufty Dusty
I would just like to understand for the sake of the argument why "less electronic crap" is [necessarily] "a good thing".
I would just like to understand for the sake of the argument why "less electronic crap" is [necessarily] "a good thing".
Go drive a go-kart sometime. It has an engine, mechanical steering, manual brakes, no suspension to speak of. And in a gokart, you are literally in 100% control.
Electronics are for people who cant drive. If you dont agree with this, you should have bought an STi or something more complicated IMO. I dont like having a computer drive for me.
J
Evolving Member
Joined: Apr 2002
Posts: 320
Likes: 0
Oh no, another 'armchair' debate 
ALL IMHO:
In terms of RELIABILITY, I wholeheartedly agree that less electronics = less things to go wrong.
However, in terms of PERFORMANCE or DRIVING FEEL, how many of us are actually qualified to give an opinion? Has anyone ever driven with and without ACD/AYC with the same Evo?
Hence I call this 'armchair' debate.
The closest thing I can contribute is this: I drove a no-electronics STi prior to the current ACD/AYC Evo. Evo wins hands-down in terms of handling at the limits. But how much of it is due to ACD/AYC, I do not know because I can't turn off the system (of course).
But then again I do understand the "pride" or "achievement" of driving a car fast/well when it's not supposed to. Kind of like that feeling you get after you hit a sweet 3-iron with a blade, while you could have easily done the same distance with an oversized 7-wood.
Personally I'm all for electronics. If all of us are stuck with "screw electronics" mentality, we won't have ABS now. And without ABS God knows how many more accidents occur on the road today.
ALL IMHO:
In terms of RELIABILITY, I wholeheartedly agree that less electronics = less things to go wrong.
However, in terms of PERFORMANCE or DRIVING FEEL, how many of us are actually qualified to give an opinion? Has anyone ever driven with and without ACD/AYC with the same Evo?
Hence I call this 'armchair' debate.
The closest thing I can contribute is this: I drove a no-electronics STi prior to the current ACD/AYC Evo. Evo wins hands-down in terms of handling at the limits. But how much of it is due to ACD/AYC, I do not know because I can't turn off the system (of course).
But then again I do understand the "pride" or "achievement" of driving a car fast/well when it's not supposed to. Kind of like that feeling you get after you hit a sweet 3-iron with a blade, while you could have easily done the same distance with an oversized 7-wood.
Personally I'm all for electronics. If all of us are stuck with "screw electronics" mentality, we won't have ABS now. And without ABS God knows how many more accidents occur on the road today.
Evolving Member
Joined: Sep 2003
Posts: 202
Likes: 0
From: Hong Kong
My car has ACD/AYC, it suppose to help entering and exiting conners. when entering, the engine braking torque is distributed to the inside wheel to reduce understeer. when exiting, the torque is transfer to the outside rear wheel to induce tail movement. I have not tried to enter conner fast enough to feel the difference but I could control power slide and hold it by the thorttle easily exiting conners. It sure helps novice drivers like me.
Originally posted by degman
ACD helps you make u-turns faster...
ACD stands for Active Center Differential..
basicly it gives u a better traction and AYC is a system that gives better torque distribution betweent the rear wheels...
ACD helps you make u-turns faster...
ACD stands for Active Center Differential..
basicly it gives u a better traction and AYC is a system that gives better torque distribution betweent the rear wheels...
AYC controls the split between the rear left/right wheels to aid in turning the car.. it works like a mechnical LSD except it works in conjunction with the brakes too to slow the inside wheels to create a yawing moment into the turn .. hence 'yaw control' ..
Originally posted by raywong
My car has ACD/AYC, it suppose to help entering and exiting conners. when entering, the engine braking torque is distributed to the inside wheel to reduce understeer. when exiting, the torque is transfer to the outside rear wheel to induce tail movement. I have not tried to enter conner fast enough to feel the difference but I could control power slide and hold it by the thorttle easily exiting conners. It sure helps novice drivers like me.
My car has ACD/AYC, it suppose to help entering and exiting conners. when entering, the engine braking torque is distributed to the inside wheel to reduce understeer. when exiting, the torque is transfer to the outside rear wheel to induce tail movement. I have not tried to enter conner fast enough to feel the difference but I could control power slide and hold it by the thorttle easily exiting conners. It sure helps novice drivers like me.
then take the same corner at the same speed in gravel mode .. then you'll feel the difference
I don't think it's a matter of novice .. it's a matter of habit
Experienced drivers are so used to mechnicals and skills that electronics hinder them .. but imagine these experienced drviers 'experienced' on the ACD/AYC .. they'll beat the crap out of us novices
