CBU version (older) and CKD 4wd comes with ASC
CKD 2wd fitted with ABS with EBD only

Sorry, misintepreted ur question..

ASC n AYC is a diff system. ASC meant to keep the car going at the intended direction(layman term). It works passively.. Only kick in when it detect skid or lost traction.

AYC is a diff system that distribute power to the front or rear wheels.. U wont get that on normal car.. Evo's n ralliart will have it.. It utlize pressure pump towards front and rear diff to actively control the power to front or rear

U can have asc with ayc together

Talk easier than do for sure.

First of all.. The evo gb comes with LSD.
The rear diff comes with hydraulic control left n right n center (ayc system)

Not to mention the drive shaft will not fit asx (there is no evo version asx)

Item required for ayc to work..
1. SST gearbox / 5mt evo gb
2. SST gear shifter controller (sst only)
3. Rear diff evo
4. Rear diff reservo
5. Ayc pump
6. Pressure lining from front gearbox to rear ayc pump
7. Wirings
8. Modified all driveshaft.

My last check on the rear diff cost 1k usd used
The ayc pump another 1k usd
The sst gearbox cost 3-4k usd used

Both exclude tax and shipment.

U better off get an used evo x