Peacelsc5

Hello all, i apologize in advance if this was asked before, but i am looking for a camshaft that would be drivable and would still pass cali smog with a good tune. i have heard about the lingenfelter gt2-3 but cannot seem to find one available. i have heard countless others but wouldnt necessarily know where to start. as of now the only performance mods i have is an intake and axleback exhaust. any advice/links would be heavily appreciated. thank you in advance and have a wonderful day

99FRC Newb

Run any cam you want and use E85. You'll pass without a problem.

Unfortunately, that means a whole new fuel system and that is pricey.

Pounder

Knowing about California's smog issues, Wife and I watched Formula Drifting last night, we thought it was funny watching all the smoke and high HP cars

LouDogg

I live in CA and I know that CA SMOG is now looking for tunes on vehicles now. Here's an article from Google.

https://www.roadandtrack.com/car-cul...or-tuned-cars/
"As of July 19, 2021, BAR will expand this testing procedure beyond the standard visual inspection and tailpipe test. Now, OBDII-equipped cars and trucks from 1996 or newer will be checked to make sure they're running factory software or a CARB-approved ECU tune."

grinder11

How would the OP pass the smog test with "any cam he wants" when a tune will instantly fail the car? AFAIK, any tune done to the PCM is now detectable by the smog police, and they can tell if it has been tuned, then returned to a stock tune in hopes of passing. Not to be a wise guy at all, but your answer is a short, simple reply to a very complex question. Hopefully some Commiefornia owners will chime in....

01magnetic01

Agree with LouDogg, and unless that intake is CARB certified with a sticker, they'll fail you on the visual, won't even need to plug into the OBDII port.

SSkull

In regards to where you mentioned that they can tell if it has been tuned then returned to a stock tune to pass, they have no issue with anything as far as that. As long as whatever tune you're running is CARB compliant(so either factory tune, or an approved tune like an A&A Supercharger supplied tune or what have you) and you've put those first miles on for all the emissions systems to read as ready, the car will be fine passing.

You can swap your tune as many times as you want between whatever non-legal tune and factory/approved tune. As long as the one you're running during the smog test is an approved tune you're good.

Only pointing it out because it seemed like you specified that situation for a reason and just wanna make sure it's clear for the future if any people are researching the forum on what's currently California smog legal or not cause I was worried that I was gonna have headaches when it was time to smog my Z06.

Completely agree with you on the guys car not passing smog with a tune and even a small cam cause the custom, unapproved tune will immediately fail the car. I do know some people have said to run a baby cam that doesn't require a tune, but just benefits more from a custom tune so you could just run stock tune with the baby cam during the smog, and then swap back to your custom tune. But to me it defeats the purpose of going through the effort of camming the engine if you're gonna run such a mildly different cam that it doesn't even need a tune, it's like why bother because the added power is gonna be barely there.

vette4fl

In Ca the best way to beat the smog check is going to lower rear gears. I had 3.90s installed when I lived in Torrance, and they woke up the acceleration big time and were fine on the “freeways”.

grinder11

On the older PCMs, the tunes can, and did, leave what I've heard called "fingerprints." In other words, even when a tune has been returned to stock, dealers, and now smog police, can tell if the tune has ever been altered. Which would void warranties for dealers, and fail the smog tests even with a stock tune reuploaded. Besides, smog police would fail you with a sniffer with a decent cam and stock tune, because the car would probably not even idle, and would trip the mil lamp for sure. I wish the OP luck.

JHrinsin

You are going to be limited to something like this;

https://www.compcams.com/fsl-210-218...ii-iv-cpg.html

With the recent changes in the smog testing, I have heard individuals talking about sourcing a second dead stock PCM (no tuner finger prints) for use during the smog testing secession (not idea if that will work or not).