Are custom tunes California state legal? - Ford Mustang Forum
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post #1 of 15 (permalink) Old 04-20-2016 Thread Starter
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Question Are custom tunes California state legal?

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post #2 of 15 (permalink) Old 04-20-2016
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Do you have a state inspection?


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post #3 of 15 (permalink) Old 04-21-2016 Thread Starter
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Do you have a state inspection?
I guess the inspection is just a quick visual under the hood by the shop smogging the car.
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post #4 of 15 (permalink) Old 04-21-2016
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Technically no. But if you don't tell the smog shop you're tuned and it's not a low quality tune, they won't be able to tell.

I've had a BAMA tune on my car since I bought it, passed inspection every other year as required. I just switched to AED tune and expect much of the same.

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FRPP camshafts, C&L Racer, AED dyno tune, 4.10s, BBK tuned shorties, MAC Pro Chamber, SVE axlebacks, SR springs, Eibach struts and dampers, Subframe connectors, Eibach front and rear sway bars, BMR Adjustable panhard, J&M AUCA & LCA, Camber plates, CMDP, BBK UDPs, Exedy LW flywheel and stage 2 clutch, Hurst short throw shifter, SS brake lines, Window louvers, CDC Shaker scoop, custom hood paint and rear decklid paint. S197 Mach 1 replica?
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post #5 of 15 (permalink) Old 04-21-2016
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The Ford Racing Pro-Cal tune is actually California Air Resources Board (CARB) approved. it comes with a sticker you put under the hood somewhere that carries the EO# or executive order number to prove it's legal. Having said that the Pro Cal tune is not overly aggressive but it's worthwhile for small gains, the improved drive-ability and greatly improved throttle response. In addtion, Ford Racing will warranty your engine and it does not effect your factory warranty otherwise.

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post #6 of 15 (permalink) Old 04-21-2016
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No but nobody really cares. And you can always save your OEM tune and throw it back on before you go to get smogged.

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post #7 of 15 (permalink) Old 04-21-2016
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Quote:
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No but nobody really cares. And you can always save your OEM tune and throw it back on before you go to get smogged.
That only works if you only have a tune. If you changed other parts OEM tune will not work unless you put all your OEM parts back on.
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post #8 of 15 (permalink) Old 04-21-2016
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Quote:
Originally Posted by Firestorm View Post
That only works if you only have a tune. If you changed other parts OEM tune will not work unless you put all your OEM parts back on.
That is true. Sorry, should have specified that.

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post #9 of 15 (permalink) Old 04-22-2016 Thread Starter
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So what everybody is saying here is that even custom tunes run clean, correct?
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So what everybody is saying here is that even custom tunes run clean, correct?
I'm not sure that's the interpretation I'd take from this thread. If so there would be no suggestion to flash back to stock, assuming your use of the word "clean" means it meets state emissions/inspection requirements.

Also, I'm not sure whether the inspection equipment will detect and red-flag a tune, upon connecting to the OBD II, before even measuring actual emissions.

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Quote:
Originally Posted by wjbertrand View Post
I'm not sure that's the interpretation I'd take from this thread. If so there would be no suggestion to flash back to stock, assuming your use of the word "clean" means it meets state emissions/inspection requirements.

Also, I'm not sure whether the inspection equipment will detect and red-flag a tune, upon connecting to the OBD II, before even measuring actual emissions.
So far I've passed emissions every year required with a tune, so if there is a red flag, it's been ignored. My guess is there is none, as long as you run clean.

I live in California, by the way.
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FRPP camshafts, C&L Racer, AED dyno tune, 4.10s, BBK tuned shorties, MAC Pro Chamber, SVE axlebacks, SR springs, Eibach struts and dampers, Subframe connectors, Eibach front and rear sway bars, BMR Adjustable panhard, J&M AUCA & LCA, Camber plates, CMDP, BBK UDPs, Exedy LW flywheel and stage 2 clutch, Hurst short throw shifter, SS brake lines, Window louvers, CDC Shaker scoop, custom hood paint and rear decklid paint. S197 Mach 1 replica?
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Quote:
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So far I've passed emissions every year required with a tune, so if there is a red flag, it's been ignored. My guess is there is none, as long as you run clean.

I live in California, by the way.
Good to know, thanks! What part of California? There are different levels of testing in different geographical areas. I work in Santa Barbara county and used to be able to have my cars tested during a lunch break.

Now however since I live in Ventura county and my car is registered there I have to have it inspected with the enhanced, more rigorous test and they don't do that up in SB County. The far eastern end of Ventura County (Simi Valley) falls within the LA basin smog control zone so the whole county is affected.

Not sure if there are other enhanced testing zones in CA.

-Jeff-
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Tinted, Borla Touring AB, ProCal Tune
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I live up in San Benito county, our regulations aren't that strict. Blow clean and lie out your teeth when it comes to modifications...

I've even been passed with an aftermarket CAI with only a slap on the wrist. '07 and up need the carbon trap that come in the stock air box.

'07 Mustang GT Premium
FRPP camshafts, C&L Racer, AED dyno tune, 4.10s, BBK tuned shorties, MAC Pro Chamber, SVE axlebacks, SR springs, Eibach struts and dampers, Subframe connectors, Eibach front and rear sway bars, BMR Adjustable panhard, J&M AUCA & LCA, Camber plates, CMDP, BBK UDPs, Exedy LW flywheel and stage 2 clutch, Hurst short throw shifter, SS brake lines, Window louvers, CDC Shaker scoop, custom hood paint and rear decklid paint. S197 Mach 1 replica?
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If your tune is not totally jacked you should pass emissions. Tunes generally look for stock drive ability at partial throttle and more power at wide open throttle.

The only thing done to a tune at part throttle is to compensate for any changes in the sensor maps for parts that have been replaced (eg. MAF, O2, TPS, etc). Everything else is done to increase throttle response and bring in more power at max throttle. Emissions are NOT tested at max throttle, so the major changes in a tune never comes into play during emissions testing.

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post #15 of 15 (permalink) Old 04-22-2016 Thread Starter
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Thanks for all the input guys!

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