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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Midpipes and Emissions



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      08-21-2009, 05:10 PM   #1
Speediance
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Midpipes and Emissions

Hey guys,

For those of you in california, do you know if my 335i will pass smog test if I get catless midpipes?

Also which midpipes are the best? I really dont know what the means either... sorry. I have a Bastuck quad axle back.

Thanks a lot.
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      08-21-2009, 05:16 PM   #2
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Quote:
Originally Posted by Speediance View Post
Hey guys,

For those of you in california, do you know if my 335i will pass smog test if I get catless midpipes?

Also which midpipes are the best? I really dont know what the means either... sorry. I have a Bastuck quad axle back.

Thanks a lot.
I may be wrong, but I believe the secondary cats are only effective during cold start. As long as your car is warm, I think it will pass the smog check. However, you will fail the visual check. Anyone else?
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      08-21-2009, 08:25 PM   #3
Speediance
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anyone else? help!
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      08-21-2009, 09:06 PM   #4
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If you go to the right people, you will pass no matter what....

but MPs are not CA Street legal btw
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      08-21-2009, 11:43 PM   #5
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You won't pass unless like stated above "going to the right people."
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      08-27-2009, 06:01 PM   #6
Speediance
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Haha. Anyone know "the right people" in NorCal?
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      08-27-2009, 07:02 PM   #7
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midpipe replacement and CA smog laws

i posted in another thread this addy

http://www.catalyticconverter.org/law

on late model car equipped with OBDII systems must follow the specifics listed--

now with that said if i were you.. id be prepared to replace the OEM midpipes if i wanted to mod the car.. and talk to the shop about how much they charge to re-install them prior to the smog test and reinstall the mods afterwards. or if its a bolt on -- be ready to get that done yourself.

and yes -- there are "the right people" who can *get* the car to pass... but they are few are far between nowadays --- ive been a smog tech and know the rules .. i know a couple of guys that will never have a smog test facility ever again -- cuz they wanted to be a nice guy, and pass some joes car, and it turned out to be a BAR undercover -- and pow --guess what __ ur on candid camera__ its the shop that really loses big time. but thats a another story to itself ..
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