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Old 02-11-2016, 02:33 PM   #15
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Regarding the gears, theoretically, if you are crusing down the freeway at 70 in 6th gear with 3.43's you're pulling 1700 rpm's or something. You switch to 3.91's and you're pulling 2100 rpm's at the same speed. You are producing more emissions since you are at a higher rpm, so gears do in fact effect emissions. It's one reason why cars these days have such tall overdrives/double overdrives, not for "driver comfort". [those numbers are off the top of my head, but you get the idea]

That being said, not sure if CARB cares about that or not. But just wanted to point out that gears can effect emissions. Do they effect them that much? No, but still I could see the EPA caring about that to some degree

they way Cali does smog testing does not take that inot effect (but, hey, dont post your theory anywhere else, k? dont want to give them any ideas that would cost us more money... haha
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Old 02-11-2016, 02:41 PM   #16
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they way Cali does smog testing does not take that inot effect (but, hey, dont post your theory anywhere else, k? dont want to give them any ideas that would cost us more money... haha
Haha yeah I'm sure they don't, and it would be hard for them to do that.

But if the overarching question (without thinking about CA) is "does gearing affect pollution emission" the answer is yes. But whether jurisdictions care about that is a whole thing altogether.
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Old 02-22-2016, 07:13 PM   #17
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Edit: added SLP Rocker Arms. I don't think they make them anymore, but may be a few sets still out there.
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Old 02-23-2016, 01:01 AM   #18
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I have a question for anyone familiar with smog-testing in California. In June I go to get my Camaro smogged. I currently have Doug Thorley Shorty Headers installed. I contacted Doug Thorley and they're still pending CARB approval.

Now I sure as hell don't want to take my car back to the guy who installed my Headers to get them removed and have the stock ones put back on. They're heavy, rusted out and sound like garbage!

If I go to a STAR SMOG SHOP will they automatically fail me? I have an aftermarket Intake too, but I'd take that off and put the stock AIR BOX back on.
Finding a shop in a couple of weeks and let you know I have doug thorley also. Hoping if using the doug headers EO number no one will tell difference.
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Old 02-23-2016, 09:32 AM   #19
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you should get a CARB compliant sticker for your intake, at the least.... Contact Volant, they are one of the only approved CARB compliant CAI in Cali - ((You DO have a VOLANT? correct??? hint, hint, wink, wink)

note: CARB sticker does not mention brand name anywhere - only CARB compliant regulations....
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Old 02-23-2016, 10:46 AM   #20
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you should get a CARB compliant sticker for your intake, at the least.... Contact Volant, they are one of the only approved CARB compliant CAI in Cali - ((You DO have a VOLANT? correct??? hint, hint, wink, wink)

note: CARB sticker does not mention brand name anywhere - only CARB compliant regulations....

K&N also makes CARB compliant CAI's. My K&N decal has the K&N logo on it as well as the E.O. #, and a phone number and address in case anyone has questions.
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Old 02-23-2016, 11:55 AM   #21
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Originally Posted by kmarshall2121 View Post
you should get a CARB compliant sticker for your intake, at the least.... Contact Volant, they are one of the only approved CARB compliant CAI in Cali - ((You DO have a VOLANT? correct??? hint, hint, wink, wink)

note: CARB sticker does not mention brand name anywhere - only CARB compliant regulations....
If you check the 1st post there are a few CARB compliant CAIs. Volant is one of them, but AEM, K&N and AirAid also have CARB approved V6 cone intakes.
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Old 02-24-2016, 02:10 PM   #22
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Cool. How do you like the tube/filter combo? Did you notice any difference?

For headers, only the shorties above are CARB compliant, and from what I've heard shorties in general don't offer any meaningful gains vs stock for an SS. For what it's worth I've heard ARH products are very high quality, and that their shorties are better quality than others.
I was talking with a GM Performance specialist at an event last weekend and he said that the ARH shorties give about 14-16hp gain with no tune required, not substantial, but thats 3.5-4%, better than a kick in the head IMO.
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Old 02-24-2016, 02:21 PM   #23
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I was talking with a GM Performance specialist at an event last weekend and he said that the ARH shorties give about 14-16hp gain with no tune required, not substantial, but thats 3.5-4%, better than a kick in the head IMO.
Interesting. I know manufacturers claim numbers in that range for shorties, but most tests I've seen in the forums here don't show anywhere near those gains.
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Old 02-25-2016, 05:33 AM   #24
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Will have carb legal JBA headers for sale soon if anyone is interested.
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Old 02-25-2016, 09:16 AM   #25
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If you check the 1st post there are a few CARB compliant CAIs. Volant is one of them, but AEM, K&N and AirAid also have CARB approved V6 cone intakes.
well, anyone of them that will send out a sticker would work. I just know for a fact, Volant does, as I have Volant on all my vehicles...
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Old 02-28-2016, 10:47 PM   #26
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My question to all of you experienced members is: When I go to a Star Smog Shop will they pop the hood open and automatically zero in for Shorty Headers? I'm really worried about this since Doug Thorley is pending at the present time and doubtful that they'll be CARB legal by MAY/JUNE which is smog time for me.
Not sure where you live, but up around Sacramento when I've brought my car in the first thing the guy did was a visual and if headers are on his list he will find them. Talk to some of the local car clubs about what their guy/gal is looking for during an inspection. Good luck.
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Old 02-29-2016, 12:34 AM   #27
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I guess I'll have to pay a little extra to pass then. I have the stock Airbox and the original headers but refuse to go through the time and money to put the old heavy rusted out headers back on! I totally thought the Shorty's were legal since it said "50 State Legal". I just simply wasn't aware about the whole "CARB" deal.

This was when I first really started getting into cars and modifying stuff. So I made a mistake and should of went with "CARB LEGAL" headers, but oh well. Hopefully the brand I have will get theirs CARB LEGAL since they're currently pending.

I hope the next administration defunds and terminates CARB all together. They've ruined so many businesses! Just a bunch of cold radical liberal extremists bastards in my opinion.
Before spending the big bucks, check with a local exhaust shop, I kind of recall asking my exhaust guy about headers for my 2010 and I think he said shorty headers will pass because they don't interfere with the CATS, but I would check into it to be safe.
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Old 03-16-2016, 01:46 PM   #28
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Doug thorleys forget it. Just failed with doug thorleys. Buying doug headers which have an EO number then should be good. California is such a croc of shit for us muscle car guys.
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