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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Dec-17-2009, 07:46:27 PM   #11
daytonaviolet
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have you had your car smogged since having CSL headers/cats?? since your car is an 06, i would think the answer is no. my car is an 04 and i just registered it last month and i didnt require smog yet. im on the fence with this mod because i know in 2010 i'll require the smog test

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It has been a while since I test smog my M3. I don't see why Euro 200 cell cats won't pass CA smog. You just need to heat up the cats well before testing. I know for a fact that 100 cells cats has difficulty pass CA smog even if it's hot. BMW has the new emission software recall and I heard you need to have that updated or you might have trouble passing smog even with stock headers and cats
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Old Thu, Dec-17-2009, 10:15:10 PM   #12
///dean
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Originally Posted by daytonaviolet View Post
have you had your car smogged since having CSL headers/cats?? since your car is an 06, i would think the answer is no. my car is an 04 and i just registered it last month and i didnt require smog yet. im on the fence with this mod because i know in 2010 i'll require the smog test
I've got my work cut out for me when smog time hits in April 2010, I have an aftermarket reflash and still need to weld in some cats.

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Old Thu, Dec-17-2009, 10:56:48 PM   #13
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I had euro headers and cats, no software, no revving the **** out of the engine like one mentioned. It was sitting for 30 minutes and mine passed.
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Old Thu, Dec-17-2009, 11:23:46 PM   #14
daytonaviolet
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what state??

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I had euro headers and cats, no software, no revving the **** out of the engine like one mentioned. It was sitting for 30 minutes and mine passed.
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Old Thu, Dec-17-2009, 11:34:09 PM   #15
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PM me with places in So-Cal that can make it happen
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Old Wed, Dec-23-2009, 12:04:32 AM   #16
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2003.5 M3 here and I had the factory recall done, SS V2 headers and just installed OBDII cats into a modified stock section 1. So I am hoping I will pass.

I tried with SS Race cats and it failed, but barely. So this should work...
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Old Wed, Dec-23-2009, 12:25:44 AM   #17
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Originally Posted by ///dean View Post
I've got my work cut out for me when smog time hits in April 2010, I have an aftermarket reflash and still need to weld in some cats.

ouch
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Old Wed, Dec-23-2009, 04:08:06 AM   #18
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2001 with euro cats, euro headers, and DA software...failed.
edit: Agency Power headers and euro cats, and DA software


Had an error as mentioned in post #8: "
I have a client with a 2001 M3 Convertible with CSL headers and Euro cats. The car passed smog and the tail pipe but we had to flash the aftermarket software back to stock because the o2 sensor readiness codes were not set."

Without the DA software, it passes.

Any idea why this is?
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Old Wed, Dec-23-2009, 04:11:47 AM   #19
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LOL!! If the Euro E46 M3 exhaust setup could pass CA smog--don't you think BMW NA would allow that setup to come to the USA?
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Old Wed, Dec-23-2009, 06:17:48 AM   #20
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LOL!! If the Euro E46 M3 exhaust setup could pass CA smog--don't you think BMW NA would allow that setup to come to the USA?
The cold start emissions standards is why the euro setup is not used in the states. After it's hot it can probably pass.
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Discussing Euro Cats and CSL Headers possible to still pass SMOG in California? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)