CA Smog legal power increase?

NissanParty · 07-23-2023, 05:03 AM

Is there a way to increase power without invoking the smog refs? I can put intake and exhaust but without a tune will those make any difference?

Or can I tune and put it back to stock for smog without being detected?

Rusty · 07-23-2023, 02:19 PM

CAI, and CBE, no tune needed. Add high flow cats. Tune needed. You can have 2 of the mods without needing a tune. You have all 3, a tune is needed. With the new rules coming out. Some of the tuners are limited to what they can change. They have to stay SMOG legal now.

NissanParty · 07-23-2023, 08:10 PM

I don't think HFCs are smog legal in CA, and almost no tune is smog legal either. ECU must remain stock, except you are allowed to use some CARB approved aftermarket tunes with a supercharger kit, that also has to be CARB approved. I think there is only one on the market.

redondoaveb · 07-23-2023, 10:58 PM

Quote:

Originally Posted by NissanParty

I don't think HFCs are smog legal in CA, and almost no tune is smog legal either. ECU must remain stock, except you are allowed to use some CARB approved aftermarket tunes with a supercharger kit, that also has to be CARB approved. I think there is only one on the market.

There's a CARB legal tt kit now too. But, there are ways around all the ******** CARB, EPA regulations as you can see by my build specs

NissanParty · 07-23-2023, 11:05 PM

Quote:

Originally Posted by redondoaveb

There's a CARB legal tt kit now too. But, there are ways around all the ******** CARB, EPA regulations as you can see by my build specs

Definitely ways around it! Just load up the stock tune at smog time, or other ways.... not that anyone here would ever do anything like that.

seymore4 · 07-24-2023, 12:18 PM

If you want to get tuned, just buy another compatible ECU (ebay, junkyard, wherever) and get the tune on that one. Uprev can completely bypass NATS so you won't have to get the keys programmed. Then just swap the original back in before you SMOG

NissanParty · 07-26-2023, 01:37 AM

Quote:

Originally Posted by seymore4

If you want to get tuned, just buy another compatible ECU (ebay, junkyard, wherever) and get the tune on that one. Uprev can completely bypass NATS so you won't have to get the keys programmed. Then just swap the original back in before you SMOG

Thanks, that is a great solution!! Then I don't have to bother with swapping tunes or anything.

seymore4 · 07-27-2023, 10:55 AM

Quote:

Originally Posted by NissanParty

Thanks, that is a great solution!! Then I don't have to bother with swapping tunes or anything.

Yep, your original OEM ECU will remain 100% stock and you'll be able to do whatever you want with the replacement and not have to worry about anything. Just plug the original back in when its time for SMOG. I've done it for a bunch of guys already

ihaveashihtzu · 07-28-2023, 01:37 AM

I'm tuned on e85 with ecutek and I didn't need to remove the tune when I got smogged a few weeks ago. All I had to do was put the stock cats back on for the visual.

07-23-2023, 05:03 AM	#1 (permalink)
NissanParty Base Member Join Date: Feb 2022 Location: Southern California Posts: 112 Drives: 370z Nismo Rep Power: 32	CA Smog legal power increase? Is there a way to increase power without invoking the smog refs? I can put intake and exhaust but without a tune will those make any difference? Or can I tune and put it back to stock for smog without being detected?

07-23-2023, 02:19 PM	#2 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,218 Drives: 2011 Nismo GM 6M Rep Power: 2684438	CAI, and CBE, no tune needed. Add high flow cats. Tune needed. You can have 2 of the mods without needing a tune. You have all 3, a tune is needed. With the new rules coming out. Some of the tuners are limited to what they can change. They have to stay SMOG legal now. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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07-23-2023, 08:10 PM	#3 (permalink)
NissanParty Base Member Join Date: Feb 2022 Location: Southern California Posts: 112 Drives: 370z Nismo Rep Power: 32	I don't think HFCs are smog legal in CA, and almost no tune is smog legal either. ECU must remain stock, except you are allowed to use some CARB approved aftermarket tunes with a supercharger kit, that also has to be CARB approved. I think there is only one on the market.

07-24-2023, 12:18 PM	#6 (permalink)
seymore4 Track Member Join Date: Nov 2010 Location: West coast Age: 41 Posts: 560 Drives: 2010 nismo Rep Power: 6727	If you want to get tuned, just buy another compatible ECU (ebay, junkyard, wherever) and get the tune on that one. Uprev can completely bypass NATS so you won't have to get the keys programmed. Then just swap the original back in before you SMOG

07-28-2023, 01:37 AM	#9 (permalink)
ihaveashihtzu Base Member Join Date: Jun 2018 Location: Sacramento Posts: 33 Drives: 08 G35, 11 370 Nismo Rep Power: 45	I'm tuned on e85 with ecutek and I didn't need to remove the tune when I got smogged a few weeks ago. All I had to do was put the stock cats back on for the visual.