So what goes on with the diffs, wheels, etc when you do a straightline burnout with a wrx? (not sti) i ask this because im driving on basically bald tires in the rain and a near stand still burnout is acutally possible for once... Im confused about the wrx's awd system, supposedly its 50/50 from a stop, then what happens? anyone want to clarify on the wrx's awd mystery to me??

 

As long as all 4 wheels are spinning, your diffs are happy campers.

And it's 'grammar.'

 

what happens if jus the front wheels are spinning? or just a front wheel since the front diff is open?

 

The center diff prevents that. It's either all 4 spinning, or just a hard launch.

 

When i drive here in the snow my rear end kicks out. Anyone know why if its 50/50?

 

50/50 does not mean that your front wheels turn as many times as your rear wheels. 50/50 is the way your Subaru splits engine torque, front to rear. Your rear tires may spin 100 times more than your front wheels in the snow to try and gain traction...that's the beauty of AWD.

 

hows the system know where to split the torque? how does it detect slippage?

 

I believe it has a viscous coupling that works similar to a limited slip differential, that is how it detects the slippage. correct me if I'm wrong though.

 

--
0==WW==0
"…axles of evil…" - george w. bush

 

that's much more clear. thanks

 

Thank you very much, Wingless. That's a better description than I had seen! And I couldn't remember where I had seen it. I was hoping someone would post up. Thanks again!