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Old 07-30-2013, 01:47 PM   #1
noah677
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MODS IN CA??

I live in CA---the worst state for mods. Has anyone done mods to their 6 speed ZL1 besides a cai? If so what have u done and how do u plan to slip through the CA state smog check when it comes? I think I can do things to slip thru visual but what about the tune change which , I think, their computer will pick up on even if u reverse it for the testicle

I know u will have kill me once u tell!!
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Old 07-30-2013, 01:53 PM   #2
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I wouldn't reverse your testicle on that day

Some people have luck finding smog shops that turn a blind eye on mods and pass it. Worst case is you keep your stock parts and when your time comes you throw your stock parts back on. Air intake and cats is about the only thing they care about. They are only looking for error codes not if you have a tune or not. If you don't have a check engine light then its good.
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Old 07-30-2013, 01:56 PM   #3
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Get a cold air intake if it is CARB certified. If not take it off when doing the test. Long tube headers will not pass smog. They move the stock location of the cats. A cat back exhaust system is good.

I don't know how a tune will affect the smog test. I got my corvette smogged with a tune last year. But with the new test modules, I don't know. Perhaps Ryne of Cunningham MotorSports will chime in?

Edit: Here is another consideration. Your car won't require a smog for 6 years. You could put a lot of mods on for 6 years. Then when a smog test is due, revert to stock.
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Old 07-30-2013, 02:15 PM   #4
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THANKS for the replies I hope I get a few more and without the snide same two people who have a need to analyze my psyche or gratification for asking this
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Old 07-30-2013, 02:47 PM   #5
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I'm in the same boat. I installed a roto fab CAI, no tune, so visual might be the only problem. How the hell would a local smog tech even know that the cai isn't stock unless they get to look at pictures of stock cars under the hood. The new GT 500 and the new Z28 both have factory cai's. I am not going to do anything more mod wise then my CAI and my Moroso catch can. Yes, California sucks.
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Old 07-30-2013, 09:27 PM   #6
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The newer ecu's are much more sophisticated and can log each time any changes have been made. So once you get a tune, it is saved in the computer that a change has been made. As of now though, they have no way of reading those changes for smog test purposes. Also, with lots of mods you will have to know someone for the visual check portion and hope it still passes the sniffer.

Who knows how the future will be though since smog for these cars is still 5-6 years away. By then they may have the technology to read those types of ecu changes.
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Old 07-30-2013, 10:19 PM   #7
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I do not have a ZL1 but do have an SS and live in Calif. Below is a quote from the proposed new regulation to take effect by the end of the year. Based on this I really think they will be looking for modified ECM's and it will fail the test if it doesn't match the OEM.
(8) The vehicle’s OBD system data does not match the original equipment manufacturer (OEM) or an Air Resources Board (ARB) exempted OBD software configuration;
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Old 07-30-2013, 10:55 PM   #8
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Quote:
Originally Posted by Briand069 View Post
I do not have a ZL1 but do have an SS and live in Calif. Below is a quote from the proposed new regulation to take effect by the end of the year. Based on this I really think they will be looking for modified ECM's and it will fail the test if it doesn't match the OEM.
(8) The vehicle’s OBD system data does not match the original equipment manufacturer (OEM) or an Air Resources Board (ARB) exempted OBD software configuration;
Does that possibly translate into using aftermarket ECUs? Or "chipped" ECUs where you have to actually open the ECU and modify it. I don't read it as modifying the software so much as modifying the actual equipment.
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Old 07-30-2013, 11:01 PM   #9
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California sucks for mods
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Old 07-30-2013, 11:03 PM   #10
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Quote:
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California sucks for mods
It only sucks every couple years....other than doesnt stop anyone else.
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Old 07-30-2013, 11:11 PM   #11
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It only sucks every couple years....other than doesnt stop anyone else.
True.. Once I got my Z shipped to CA, I got it smogged right away. Then I started on my mods. I'm moving back to Illinois, so I'm not worried about another smog test.
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Old 07-30-2013, 11:13 PM   #12
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Quote:
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California sucks for mods
You could also move to a county that doesn't require smog. I believe Clearwater doesn't require it.
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Old 07-30-2013, 11:17 PM   #13
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You could also move to a county that doesn't require smog. I believe Clearwater doesn't require it.
I wonder why Clearwater doesn't require a smog test? I'm in the military so once my EAS comes, I'm moving back to my home town.
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Old 07-30-2013, 11:48 PM   #14
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Quote:
Originally Posted by TripleBlkZL1 View Post
I wonder why Clearwater doesn't require a smog test? I'm in the military so once my EAS comes, I'm moving back to my home town.
Not sure. But there are a few counties that don't require it. Usually out in the country. I looked on the DMV website and all I could find was this:

"There are six counties that require smog certifications within certain Zip Codes only. These counties are:

El Dorado, Placer, Riverside, San Bernardino, San Diego, and Sonoma."
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