CARB approved Mods for 2007

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CARB approved Mods for 2007

Postby RonM007 » Fri Dec 18, 2015 5:46 pm

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
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Re: CARB approved Mods for 2007

Postby Brian » Sat Dec 19, 2015 6:00 am

As with NB so it is with NC that I expect our midpipe will get CARB. I kept CARB in mind when designing our new Helmholtz midpipe and if you study the pictures in comparison to our older design NC midpipe you might notice that the converter on the new Helmholtz midpipe is double in size. I expect the much bigger converter on our Helmholtz midpipe will make the CARB process work for that one, will see. My guess is still about a year for that. I also hope to get the Street header with converter a CARB stamp, but again about a year is my best guess. The NB was out of production a few years before we got all our NB CARB midpipes through the state process, and if you look at the site at those you will see it ended up taking THREE different part numbers to cover 99 to 05 NB. Will take similar time for the state to get done on our NC applications and I won't be surprised if it takes at least two part numbers for NC midpipes. For now, nothing we can do but wait on them.
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Re: CARB approved Mods for 2007

Postby ptr622 » Sun Dec 20, 2015 1:53 pm

Brian, any chance for the PPE LT? Or you can say already now: "no way, cat too small" etc.? Thanks.
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Re: CARB approved Mods for 2007

Postby Brian » Sun Dec 20, 2015 2:14 pm

No chance...not near enough volume to support the effort
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