RS4000

Engine power is transmitted to the self locking Torsen center differential, and from there directly to the front axle differential and, by way of a drive shaft, to the rear axle differential.
When a vehicle is going around a corner, the outside wheels turn faster than the inside ones. To compensate for the difference, a differential gear is installed in the drive axles.
To compensate for the movement of the wheels on the front and rear axles, the Audi quattro has an additional center differential.
If one wheel should start to slip and begin to lose traction, a differential will only transmit a small amount of power to the other wheel that is not spinning. On the Audi quattro, this unwanted differential effect will be counteracted automatically by the self-locking Torsen center differential between forn tand rear axles, and the engine power will be transmitted to the wheels with the better traction.

MFZERO

Emissions testing every other year. Saftey every year. not too sure about registration. i bought & registeredit last year and the sticker says '04 on my plate.

RS4000

thanks. i'll be living in western mass. don't know what happened to that thread, though.

foberg34

Me from WMass