So I failed my smog test yesterday (results below). The tech said it looks like I'm running a little lean. I didn't fail by much, but failed nontheless.
I have an 06' 6mt G35 coupe.

Breather mods:
Berk HFCs
Tanabe Medalion full exhaust
z-tube
MREV2
5/16 MD spacer

I had driven on the freeway for about 30 min prior to going.
I just had the short block replaced 600 miles ago, they replaced all fluids but maybe not the air filter. Not sure if that may have affected the results.
I do also have a slight rattle in the exhaust so not sure if that can also affect the results if there is a leak.
No codes were thrown so it's kind of a guessing game for me on what can fix my problem, so I need ur guys help please.
Oh and if anyone knows of a good muffler shop in the Glendale or surrounding areas that I can go to to see if I actually do have a leak that would be awesome.
I will be contacting some of the shops on the list of SoCal shops thread, awesome info BTW.

 

you dont have any extensions where the o2's hook up to the cats do you? When i was fully bolted on my car passed just fine. The tech that did it didnt even trip about my nismo cold air intake (LET ME KNOW IF YOU WANT HIS NUMBER HE WILL HOOK YOU UP). any who check for vacuum leaks or any air leak. its going to be related to that. check around the plenum.

 

It's probably the HFC's...

 

I agree ^^^^

 

D@mn, I thought it was only TPs that caused probs.
There's been a lot of people that claim to have passed smog with HFCs on here and G35driver.
I don't get it.

 

Not sure if you are in an enhanced testing area but I doudt many (if any) of the HFC's would pass the test. Put the stock cats back on and you will pass no problem.

Or, you can try the Guaranteed to Pass stuff that they sell at the auto parts store. Actually worked for me on a previous car that failed only by a bit. Put the stuff in and followed the directions and the car passed. Just make sure not to drive the car hard while the stuff is in.

 

Interesting, i got my car with Stillen HFC's been wondering if i will have the same problems lol.

Did they do a visual inspection on the headers too? Been curious to know if they will hassle me for my Stillen headers

 

i have some stock cats at my shop i can let you borrow but im going to have to charge you to install them and take them back off after it passes. you can go to my guy for the smog too he charges 45 i think.

 

Thanks pacheco, I still have my stock cats.
How much do you charge for removal of HFCs & later reinstall after smog?
Also where in Socal are you?
I usually go to R&D Factory for all the installs I don't do, they're close & prices are right.

 

ill hook you up bro my shop is located in baldwin park.

 

its the HFC's*** they wont pass the sniffer here in cali.

 

Depends on the shop...some shops are more **** than others...

 

Yeah def depends on the shop.
1st shop I went to the old guy was pretty thorough looking under the hood but my breather mods aren't obvious unless u know what ur looking for.
Once he saw the Tanabe exhaust tips he refused to test my car.
He said he didn't want to lose his license.
It's not like I was bribbing him, he was clueless.
The 2nd place the tech didn't give a ****, really just verified the vin on the car.
Then tested it and said I failed.

 

I get mine done for $130 in South El Monte and I have test pipes on my 03

Gotta know ppl

 

Definitely the HFC because you just barely failed for HC. HFC will cause you to fail the visual inspection as well.

 

D@mn I used to know places that would pass stuff like this.
I'll check G35driver.

 

My smog is coming up too. In 2009, California State law says it is illegal to run HFC / TP's. I have crawford HFC's and most people mistaken them for OEM, they look very "generic."

 

Yeah they do look like oem.
My problem wasn't the visual inspection though it was the sniffer test.
Unless they have a lift I can't see how they would know if you have HFCs or oem cats.

 

Thanks for coming to my turn auto bro. Hope to do business with you again.

 

berks are notorious for blowing out, too bad you have to smog this yr. next year they're getting rid of sniffer in CA for all 2000 and up model yrs