make my CRT oversteer

[BP-Revo]

Increase the weight of the diff fluid in the center diff.

Center diffs naturally distribute more power to the front wheels and under (high) power make the front wheels spin (but the rears retain traction) which makes the truck push.

The rear tires rotate slower when than the front when the truck is turning, so if you make it so the front and rear tires have to rotate at more similar speeds (heavier center diff fluid) then the truck will drift as the rear tires will spin faster than they need to, causing a loss in traction and making the rear end kick out.

Just throw 50K in the center and you will drift all over but still have good overall power distribution.