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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 and B58 Turbo Engine / Drivetrain / Exhaust Modifications > Emissions light after JB1 and catted downpipe
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      06-02-2016, 12:20 PM   #1
tito_gsx
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Emissions light after JB1 and catted downpipe

Wondering if anyone here can offer insight into my emissions light on my F30 335i.

First I installed JB1 tune about month ago and had no issues. Very happy with my power gain.

Last week I installed AFE catted downpipe (p# 48-36310) which they claim does not cause CEL. Immediately after install car drove perfect no errors. After about 60 miles driving I get emissions light. I pulled following code:

122108 - Blow off valve jammed close
180001 - Catalytic converter, efficiency below limit value

My mechanic reset the error codes and I've been driving since yesterday with no emissions light. So far so good but I have a feeling it will come back again. Input is appreciated!
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      06-02-2016, 01:34 PM   #2
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Contact AFE - reads like you have been Mis sold.
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      06-02-2016, 06:45 PM   #3
Mike@N54Tuning.com
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Anyone telling you that aftermarket catted downpipes will never throw a CEL on a modern BMW is either confused, misinformed or worse.

Mike
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      06-02-2016, 06:49 PM   #4
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Anyone telling you that aftermarket catted downpipes will never throw a CEL on a modern BMW is either confused, misinformed or worse.

Mike
+1

Aftermarket catted dp still has a chance of throwing a CEL...
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      06-03-2016, 11:36 AM   #5
tito_gsx
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Quote:
Originally Posted by 335_paul View Post
+1

Aftermarket catted dp still has a chance of throwing a CEL...
I agree. I bought catted dp from someone who claimed it didn't have CEL so I thought my chances were pretty good.
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      06-03-2016, 11:47 AM   #6
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I thought enzo catted DP guaranteed no cel?
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      06-03-2016, 12:09 PM   #7
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Quote:
Originally Posted by chaudhrysn View Post
I thought enzo catted DP guaranteed no cel?
Im not sure if its true or not, havent seen anyone with one of their downpipes. But most of the companies that state there wont be a CEL are mostly wrong
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