My first thought is Brian thinking not again. But us Cali guys just can't be happy with the rest of the world enjoying things we can't have. So here goes.
I bought a 2007 GT 6 AT (28000 miles) in July 15. I wish to thank every contributor for your post and experience, there is a wealth of knowledge here and at M.net. I have stayed quite and read as much as I could in both this forum and Miata.net. As per recommendations on M.net I have put about 5K on the car since July. Several truly enjoyable romps through the mountains north of LA and mountains south on Indio. I realize that my DD though fun as all get out does needs to have some suspension, braking, tire and performance upgrades.
As I understand from all of the reading that there are CARB approved CAI for 2007's. That Brian's early testing show an 8 to 10 Hp increase with the CAI and stock exhaust. That the addition of a GWR header, mid-pipe and muffler gained another 2 to 3 hp. Both helped improve torque. Threads at M.net lead me to believe that another 5 to 10 can be gained with a tune to an otherwise CARB legal set-up.
All said a CAI and Tune can be had for under $1000, with a gain of 10 to 15 Hp while I wait for a header and mid-pipe to be approved. Dealing with State & County Regulators regularly I don't envy what Brain has to go through to get approvals.
Brian, thank you for what you have done towards CARB approval of the new mid-pipe. Did I miss any otherwise simple mods for us in California?
2007 GT, 6AT, Copper Mica