I own 2007 columbia , can i go to california or not ?

Yes you can only go for 1000 miles per year, but you have to register with the state of California.

 

1000 miles per year if you only drive cali. 5000 miles per year if you long haul.

07's are legal for cali. but if they didn't install dpf's till 08. that everyone says. kind of don't make sense.

 

I have an 07 freightshaker with no dpf and no piss box (def) ive been there twice this year no problem..i noticed much older trucks operating so I'm also curious when they will start clamping down on this

 

1,000 miles/year inside California -- regardless of how many miles you run out of state:

"(41) “Low-use Vehicle” means a vehicle that will be operated fewer than 1,000 miles in California in any compliance year. If that vehicle has an engine that powers other equipment that can only be used while stationary, the engine or power take off (PTO) must also operate less than 100 hours in any compliance year."

If it wasn't equipped with a dpf, it isn't legal unless retrofitted (see the note by the *):
http://www.arb.ca.gov/msprog/onrdiesel/documents/FSRegSum.pdf

 

Engine year is what's important. 2007+: CARB compliant, 1996 to 2006: need retrofit, 94 to 95 only good 'till 12/31/2016 without any mods.