Are Kleemann headers smog legal in CA?

03renntechamg · 11-22-2011, 01:11 AM

Hello mbworld,

I have an 03 clk 55 amg and im thinking about purchasing some headers. Im looking to gain a little power without having to re-modify the exhaust to pass emissions. I realize the Kleemann headers and down pipes replace the primary cats but would leaving the secondary cats/resenator be enough to pass smog in CA?

Im assuming they would fail visual but at my smog shop that would not be a problem. Im concerned with them passing the sniffer.

Any thoughts or suggestions will be greatly appreciated.

Thanks

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Kevwood · 11-22-2011, 04:08 AM

They aren't SMOG certified but if you've got a shop who looks the other way then you're doing okay. I don't see any reason why you wont pass the sniff with the secondaries in place - I'm being told here that a set of 200 cell high flows are more than enough to pass the test, another guy told me 100's will pass...?

03renntechamg · 11-22-2011, 04:19 AM

Quote:

Originally Posted by Kevwood

They aren't SMOG certified but if you've got a shop who looks the other way then you're doing okay. I don't see any reason why you wont pass the sniff with the secondaries in place - I'm being told here that a set of 200 cell high flows are more than enough to pass the test, another guy told me 100's will pass...?

Now are the 200 or 100 cell cats in addition to the secondaries or are the secondaries enough to pass emissions alone? Also, will i still experience gains with the stock header back exhaust system?

I realize this is not the optimal performance setup, I just want to keep her as queit as possible.

Klinh · 11-22-2011, 04:24 AM

Quote:

Originally Posted by Kevwood

I don't see any reason why you wont pass the sniff with the secondaries in place - I'm being told here that a set of 200 cell high flows are more than enough to pass the test, another guy told me 100's will pass...?

Everyone that i know with header got issue with check engine light come on related to the header. For some, the only way to fix the issue is by turning of the sensor. This is an issue when smog check, you will get an "system not ready" status and fail. The only way to get the "system ready" status is by turning on the sensor but then you might get the check engine again and will fail the test.

Kevwood · 11-22-2011, 05:31 AM

Quote:

Originally Posted by 03renntechamg

Now are the 200 or 100 cell cats in addition to the secondaries or are the secondaries enough to pass emissions alone? Also, will i still experience gains with the stock header back exhaust system?

I realize this is not the optimal performance setup, I just want to keep her as queit as possible.

I only have one set of cats, the primaries are now in the secondaries location because of the Kleemann headers & downpipes.

novae500 · 11-23-2011, 02:46 PM

If you get kleemann headers or pretty much any other headers that delete the primary cats, you will need to get a tune to "turn off the rear o2s", but also need to make sure that its still "ready mode"

togaclk55 · 11-24-2011, 06:13 AM

I think as long as you have 1 set of cats on your car you will be fine

BRIZZOK84 · 11-24-2011, 02:51 PM

I would also think if you have cats on the car it should be good to pass. The car will throw a code for the deleting cats but a tune can turn it off. Let us know what you end up doing!!!

11-22-2011, 04:08 AM	#2
Kevwood MBWorld Fanatic! Garage is empty, add now Join Date: Jul 2010 Location: A Canadian in Dubai, United Arab Emirates Posts: 4,166 Drives: '05 C200K SS, '05 Kleemann CLK500K & '92 Z34 5sp (track car in Canada)	They aren't SMOG certified but if you've got a shop who looks the other way then you're doing okay. I don't see any reason why you wont pass the sniff with the secondaries in place - I'm being told here that a set of 200 cell high flows are more than enough to pass the test, another guy told me 100's will pass...? __________________ Kleemann S8 CLK500< Kleemann supercharger, cams, headers & tune \| H&R springs and sways \| Koni adjustable suspension \| Brembo GT BBK (6F/4R piston, slotted floating composite rotors) \| Carbon fiber front lip & rear diffuser \| Custom Magnaflow exhaust, quads with 100 cell cats \| GPT pulley \| Vorsteiner carbon fiber rear spoiler \| Quaife LSD \| E55K airbox & kevlar tubes \| Magnecor KV85 wires \| 360 Straight 5ive wheels, carbon fiber \| Mods/build thread

11-23-2011, 02:46 PM	#6
novae500 MBWorld Fanatic! Garage is empty, add now Join Date: Jan 2009 Location: Northern VA Posts: 1,826 Drives: W211	If you get kleemann headers or pretty much any other headers that delete the primary cats, you will need to get a tune to "turn off the rear o2s", but also need to make sure that its still "ready mode" __________________ 05 E55: K&Ns, MBH LTH, Renntech 168mm, EC H/E, 010 Bosch, HRE 547r, TTM scoops, CF VRP Engine cover, AZN Leds *Custom tuned by Jeremy @* 06 E500 4matic: K&Ns, Renntech V3 ELM,

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11-24-2011, 06:13 AM	#7
togaclk55 Super Member Garage is empty, add now Join Date: May 2011 Location: Bay Area, CA Posts: 861 Drives: CLK55	I think as long as you have 1 set of cats on your car you will be fine

11-24-2011, 02:51 PM	#8
BRIZZOK84 Member Garage is empty, add now Join Date: Jul 2011 Location: Lake Oswego Posts: 197 Drives: 2003 CLK55AMG	I would also think if you have cats on the car it should be good to pass. The car will throw a code for the deleting cats but a tune can turn it off. Let us know what you end up doing!!!

11-24-2011, 02:51 PM
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