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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 > do I have to put my primary cats back in?



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      04-11-2013, 12:09 PM   #1
robc1976
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do I have to put my primary cats back in?

I have to have a smog test done (Illinois), will I pass with just my secondary cats or will I have to put my primaries back in? I don't think it is a OBD2 test just a sniffer. I guess our it in map 0 also and dive fir a bit? Never have done a smog test modded in this car lol!
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      04-11-2013, 12:50 PM   #2
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You'll need to put DPs back to pass smog. The secondaries aren't enough.
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      04-11-2013, 12:52 PM   #3
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Quote:
Originally Posted by blisstik View Post
You'll need to put DPs back to pass smog. The secondaries aren't enough.
2nd....I tried with only secondaries.
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      04-11-2013, 12:59 PM   #4
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Quote:
Originally Posted by joec500 View Post
2nd....I tried with only secondaries.
Damn lol!
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      04-11-2013, 01:00 PM   #5
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Quote:
Originally Posted by blisstik View Post
You'll need to put DPs back to pass smog. The secondaries aren't enough.
sucks!
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      04-11-2013, 05:46 PM   #6
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Quote:
Originally Posted by robc1976 View Post
sucks!
Pay to play!

I found a local shop that swapped my DP's for about 200 bucks. I never went back to catless...I actually like how quiet the car is now. And with 100% e85 the car runs great without the catless DPs
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      04-11-2013, 06:16 PM   #7
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Find a shop that will sniff another car to pass you?
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      04-11-2013, 10:11 PM   #8
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Quote:
Originally Posted by joec500 View Post
Pay to play!

I found a local shop that swapped my DP's for about 200 bucks. I never went back to catless...I actually like how quiet the car is now. And with 100% e85 the car runs great without the catless DPs
I just hate driving my car with oem dps, installing them is boo issue.
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      04-11-2013, 10:40 PM   #9
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haha, I just went over to cwarren's shop and we put my stock DPs back on my car so I can take it to the dealership next week. Think I have and injector going out and need new turbo's. CPO...

Good thing is my car is due for smog in Aug so I'll just take it a little early to get my tags renewed. I'll be good for another two years then. They check ready state through OBD, so no sniffer.

Good luck Rob.
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      04-12-2013, 12:29 AM   #10
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Different states have different inspections don't they? I think in AZ you can get by on catless DP's? somebody chime in from AZ..
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      04-14-2013, 01:43 AM   #11
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^^ yes some just do a ecu readiness
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