C'mon man use a appropriate car!
Trust me, my buddy convinced me to race mod an Impreza and not even kidding, I have not had to use one other car off-road, it is THE best. And I win a lot of races too
And as a rule of thumb, keep your torque-differential near 50-50 (I go 45-55) and try putting brakes at 5/7 to get some kick into the turn. Also through this ALWAYS try to maintain traction and;
the inside line is always faster!
I've also found that camber at 2/3 works best. It sounds weird but I read it somewhere and it works like a charm