well, dependant on where you are in so cal......i know a few in orange county.....church's automtive is near long beach they tune and dyno, here's the link for church's:
http://home.earthlink.net/~spchurch/churchautomotivetesting/
if you're closer to southern orange county, you could go to dynamic autosports.....i think they're still in lake forest, here's the link
http://www.dynamicautosports.com/
personally, i've been to church's, sean is a good guy....when i had my turbo tC, i took it there to get it tuned and dynoed.....i think for some base runs, its like 3 dyno runs, for $75....forget exactly though! hope this helps
http://home.earthlink.net/~spchurch/churchautomotivetesting/
if you're closer to southern orange county, you could go to dynamic autosports.....i think they're still in lake forest, here's the link
http://www.dynamicautosports.com/
personally, i've been to church's, sean is a good guy....when i had my turbo tC, i took it there to get it tuned and dynoed.....i think for some base runs, its like 3 dyno runs, for $75....forget exactly though! hope this helps