HJS Catted Downpipe

BMWILUVU · 03-14-2017, 11:24 AM

Has anyone had trouble passing CA emissions with catted down-pipes using HJS 300? It is EURO-6 compliant. A mechanic-friend told me that does not mean it will pass CA emissions. I would like to get a catted down-pipe but not if it can't pass stringent emissions testing which begs what is the point then?

SingleturboVert · 03-14-2017, 12:56 PM

Does california sniff modern cars or just OBD?

BMWILUVU · 03-14-2017, 02:34 PM

Quote:

Originally Posted by SingleturboVert

Does california sniff modern cars or just OBD?

Sniff at various speeds

kern417 · 03-14-2017, 02:44 PM

any cat modification will not pass. usually people need a tune to show readiness but not have a CEL for an OBD test, but you are going to still have more pollution coming out even if it's catted, because the cat has less material in it.

mike@x-ph.com · 03-14-2017, 06:15 PM

No high flow downpipe is emission legal

BMWILUVU · 03-14-2017, 06:50 PM

Quote:

Originally Posted by mike@x-ph.com

No high flow downpipe is emission legal

HJS is EURO6 compliant. Do you mean there are no sport/hiflo catted downpipes that is CARB legal?

mike@x-ph.com · 03-14-2017, 06:51 PM

Quote:

Originally Posted by BMWILUVU

HJS is EURO6 compliant. Do you mean there are no sport/hiflo catted downpipes that is CARB legal?

Here is where it gets tricky ... Just because a downpipe passes emission does not mean it is compliant.

In order for it to be compliant, it has to have Carb approval. I am not aware of any aftermarket downpipe that has a Carb EO

BMWILUVU · 03-14-2017, 06:55 PM

Quote:

Originally Posted by mike@x-ph.com

Here is where it gets tricky ... Just because a downpipe passes emission does not mean it is compliant.

In order for it to be compliant, it has to have Carb approval. I am not aware of any aftermarket downpipe that has a Carb EO

Are you saying passing emissions is different from getting a Carb stamp of approval for a product?
I am just looking to pass CA level emissions testing.

mike@x-ph.com · 03-14-2017, 06:57 PM

Quote:

Originally Posted by BMWILUVU

Are you saying passing emissions is different from getting a Carb stamp of approval for a product?
I am just looking to pass CA level emissions testing.

Just because a product passes emission does not mean it is Carb approved.
Take for example non-approved intakes. Car will still pass emission, but if you get caught you will be fined for using a non-carb legal product

kern417 · 03-16-2017, 07:35 AM

best bet is swap to stock dp, get your sticker, and then swap back.

03-14-2017, 11:24 AM	#1
BMWILUVU Lieutenant Colonel 809 Rep 1,597 Posts Drives: 340ix Join Date: Mar 2017 Location: The Boibs iTrader: (0)	HJS Catted Downpipe Has anyone had trouble passing CA emissions with catted down-pipes using HJS 300? It is EURO-6 compliant. A mechanic-friend told me that does not mean it will pass CA emissions. I would like to get a catted down-pipe but not if it can't pass stringent emissions testing which begs what is the point then?
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03-14-2017, 12:56 PM	#2
SingleturboVert Second Lieutenant 49 Rep 202 Posts Drives: E93 335i Join Date: Jan 2017 Location: USA iTrader: (0)	Does california sniff modern cars or just OBD?
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03-14-2017, 02:44 PM	#4
kern417 Cheapskate 4445 Rep 4,993 Posts Drives: 2018 440i \|2016 340i \| 2010 X5 Join Date: Aug 2016 Location: Cincinnati iTrader: (1)	any cat modification will not pass. usually people need a tune to show readiness but not have a CEL for an OBD test, but you are going to still have more pollution coming out even if it's catted, because the cat has less material in it.
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03-14-2017, 06:15 PM	#5
mike@x-ph.com BimmerPost Supporting Vendor 24095 Rep 190,633 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	No high flow downpipe is emission legal __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-16-2017, 07:35 AM	#10
kern417 Cheapskate 4445 Rep 4,993 Posts Drives: 2018 440i \|2016 340i \| 2010 X5 Join Date: Aug 2016 Location: Cincinnati iTrader: (1)	best bet is swap to stock dp, get your sticker, and then swap back.
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