the way backroads of Bouquet? i think ive done that before, years ago. also some good roads i found but didnt get to try out up by Castaic lake area.
Topanga has tooo many damned cars that get in front of you and drive 10mph.

plus pedestrians plus the Chp and sheriffs love to hang out there with their radars going. Malibu Cyn is an even better road with much less traffic but you still have to watch out for the Popo. seems like everytime i head to the beach i see a corvette or porsche on the side of the road getting written up.
I live right by the Santa Susanna Pass. its the canyon road to get from the Valley to Simi Valley, right next to the freeway. EVERYBODY goes there to test their stuff out. there are always bikes zipping through there and hipo cars. VERY smooth and some SERIOUSLY tight turns, almost Uturns! I never really see any cops up there. I highly suggest it to anyone who lives in the area. Its the last road off of Topanga Cyn right before you hit the 118 freeway. there is a stoplight, you cant miss it.
Agoura Hills also has some great deserted roads. A buddy of mine from waaay back in the day was a service advisor at Acura 101 and he said they would take customers in the NSXs into the back roads to let the cars out.

I need to get my springs in before i can fully appreciate what this beast has to offer me.