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      12-04-2009, 11:52 PM   #972
noj182
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Drives: e92 335i
Join Date: Nov 2009
Location: Las Vegas

iTrader: (1)

Anyone have experience with emissions and catless downpipes + o2 sims? Haven't gone through the smog process yet myself since my other car was registered in another state. I know clark county forces smog yearly for renewing registration so I'm debating if it's worth swapping stock pipes out every year.
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