can anyone tell me the ratios for the DCCD power. what i am asking is, what does each level equate to power-wise with the differential on an 04 STI? any thoughts or comments would be greatly appreciated.

A DCCD is a Driver Controlled Center Differential. There's no altering of the power levels, just shifting them around.

If you adjust the car to full lock, then your car will split all power 50/50 and you won't get as fast of a roll as if you were to roll the DCCD to the rear and put it on full open.

ok, so having it in lock mode will give me 50/50 power ratio, but having it all the way in the rear will do what? also, i was kind of wanting to see if anyone could tell me exact numbers. for instance, lock mode is 50/50, what about the next step back, is that 48/52? etc.

if you know the full lock is 50/50 and the unlocked (depending onf your year) 65/35 for 04-05 (dont know06's) you can figure out the rest. just do the math.... and your question has been answered ......

grazie, really appreciate the input

Full manual/open is a 35/65 torque distribution. With the DCCD locked, the torque split will be whatever it takes to keep the front and rear wheels spinning at the same speed, whether it is 50/50, 1/99, or 99/1. This happens until the difference in torque going to the fronts and rears exceeds the clamping force of the center diff.

If you search for "DCCD FAQ" there are some good threads on this.

Full manual/open is a 35/65 torque distribution. With the DCCD locked, the torque split will be whatever it takes to keep the front and rear wheels spinning at the same speed, whether it is 50/50, 1/99, or 99/1. This happens until the difference in torque going to the fronts and rears exceeds the clamping force of the center diff.

If you search for "DCCD FAQ" there are some good threads on this.

word.
use lock in snow or mud.
use open to do shenanigans.
leave it in auto to go fast.

if you know the full lock is 50/50......
......then you don't understand the difference between a torque split and what happens when a limited-slip device is limiting slip.

- Jtoby