HF Cats and CA SMOG Emissions Testing

[RYU]

Vendor claims the 300+ cell units will pass CA smog. Everyone i've asked says High Flow is no bueno and fails. Thoughts?

 

[Dhalsim]

I believe I have the 300 cell units and passed late last year

EDIT: Confirmed I have the 300 cell

 

[Prospeed]

We have about 7 verified NSX owners in California that have passed CA emissions with our 300 cell cores. They work! If you have any other problems that might trigger a CEL it will not pass with or without the OEM cats. Just make sure you get them hot and you should be fine.

 

[Hapa88]

Be sure you go to a Smog station that offers a free retest should you fail the first time around. :wink:

 

[RYU]

We have about 7 verified NSX owners in California that have passed CA emissions with our 300 cell cores. They work! If you have any other problems that might trigger a CEL it will not pass with or without the OEM cats. Just make sure you get them hot and you should be fine.

You probably have access to this so hence the special request. Do you have a picture (such as below) comparing the core density of a 100, 200, and 300+ cell?

 

[RYU]

Be sure you go to a Smog station that offers a free retest should you fail the first time around. :wink:

indeed! luckily my smog guy takes beer and donuts as pmt.

 

[Prospeed]

I do have a picture I will post it up when I get a chance.

 

[nsxnut]

My stock cat were bad.

I replaced with the Science of speed after market cats and passed with flying colors.

Later,
Don

 

[Track Addict]

Just make sure you get them hot and you should be fine.

yeah this ^ :tongue:

 

[liftnot]

My stock cat were bad.

I replaced with the Science of speed after market cats and passed with flying colors.

Don]

This happened to me as well and the new Random cats from SOS lasted two years as I failed my smog this time but barely passed with a set of borrowed OEM cats from NSXclear.

I plan to buy a set of HF cats for the next smog test either the Random cats again or the Prospeed 300+ cell JUST for smog test.

This seems to be my best option to pass smog. good OEM cats are hard to come by.

 

[RYU]

I do have a picture I will post it up when I get a chance.

Friendly reminder --- when you get some free time.

 

[SoCalDude]

This happened to me as well and the new Random cats from SOS lasted two years as I failed my smog this time but barely passed with a set of borrowed OEM cats from NSXclear.

How many miles did you put on the Random Tech cats? $600 to last two years is not very good.

 

[RYU]

This happened to me as well and the new Random cats from SOS lasted two years as I failed my smog this time but barely passed with a set of borrowed OEM cats from NSXclear.

That's exactly what I hear through the grapevine. With HF Cats you will pass the first and maybe the second time but after that they're toast.

 

[jagtiger]

My Prospeed HFC passed smog without problem. I believe i have the 300.:wink:

 

[liftnot]

How many miles did you put on the Random Tech cats? $600 to last two years is not very good.

more than 10k miles and no more than 15k miles.

 

[liftnot]

That's exactly what I hear through the grapevine. With HF Cats you will pass the first and maybe the second time but after that they're toast.

Ditto. So I think the best way for me is to buy a spare set of HF cats and use it only for smog. A good set of OEM cats are so hard to find. Its such a pain every two years.