Friend unless we are at cross purposes I think u are under a common misconception and u will find my description of the ACD correct. Have a butchers here :-

http://www.lancerregister.com/showth...o&pagenumber=1

According to that ACD does not split torque front to back. Unless they are wrong

PS could u fit unequal length manifolds to a JDM or Spec C and not screw it up and get the burble back ?

 

LOL Bit beyond my expertise this mate! I would guess you could, but it would be considered a downgrade as you'd be making the exhaust system less efficient and loosing out on some bhp and lbs ft. I'm guessing that the ECU would need remapping to take account of the changes too.

Just a guess though!

 

Thanks for the info m8 . I might take a look into this. I think an ideal car for me would be a Spec C with unequal manifolds, a decatted free flowing exhaust from there back and a remap to make it all work properly with the burble and UK fuel Oh yeah .

 

Am I right in assuming the big benefit of equal length headers is the turbo spools up quicker?

 

get the mr300 its an easy upgrade to 350 bhp.

top gear has never shown an impreza kicking an evos butt ive been waiting for ages.last thing ive seen is a evo battling with a Lamborghini Murcielago coming out tops.
as the stig said the scoob is for the boys.and the evo is a mans car.

 

To get the burble back you need to replace, headers, uppipe, turbo & downpipe.

On a twin scroll headers mate to an uppipe split to meet the twin entry turbo (twin scroll) and the flange from turbo to downpipe is a different shape to previous turbos.

So to replace all that becomes expensive and costs you power and torque.

Cheaper to just buy a classic RA.

HTH.

Damian.

 

Hum,

Now if you look at the internals of the ACD, it has a hydraulic clutch pack that when no pressure is applied, the diff is open and when pressure is applied, the diff is locked. The operation of the diff is totally under the CPU's control. The programming decides what to do with it to give the best handling within the 3 settings. It probably does what you describe, but its not a simple on/off device, the diff is active and responds variably in milliseconds continuosly (god my spelling).

The EVO has yaw and pitch sensors integrated into the handling system which the Impreza does not have (though i remember someone was working on that) and uses these to produce a car that has no understeer while still being stable and while the AYC does most of the work, the ACD is involved.

Have a look here at a description of the ACD by people who run them

http://www.btrprep.com/e7_qa.htm

Comes back to my original comment, the EVO AYC on its own is more sophisticated than the DCCD, add ACD and its even more sophisticated.

However, the AYC costs a fortune, cannot be repaired and they do fail if abused (ALWAYS do the 4500 mile AYC fluid changes).

It cost me £1500 to get a second hand delivery mileage one.

BUT, my scooby still has more soul

 

All the new 300's have been sold, I very much doubt you could get a 320 for £24k brand new, even without the free servicing.

I test drove a 320 a few weeks ago and my bones still haven't recovered. Absolutely rock hard ride, but the performance was staggering. I can olnly describe it as like driving a go kart.

Only ever driven a tuned MY00 so can't comment on the STi.

 

On that I do most definately agree