I have very little experience with the B4 having only got one 2 weeks ago, but my 1st guess would be the springs. black/brown are really soft. I'd start with silver/silver and go from there.
if you're still pushing on power try a ARB on the back, stand the shocks up more (rear), 30 degree carriers on the front.
I'll be racing mine tomorrow on carpet so I'll get a better idea from that.
|