AW in a VW
Ready to race!
Others can speak from personal experience, but I think Hewlett is and Onion Creek is not. Might do a quick search for Hewlett or Onion Creek and skim the results to see the individual reports.
I've been to Hewlett a few times and they haven't said anything about my intake. Also I'm pretty sure mike from BD Tuning has flashed cars up there.