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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Do I need DP fix?



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      12-28-2012, 07:25 PM   #1
aph335i
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About to Install VRSF 3" catless down pipes. Should I be getting the DP fix?
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      12-28-2012, 07:35 PM   #2
Bimmer Barney
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You need a tune or the DP Fix to suppress the code. To pass emissions, if applicable for you, you need the DP Fix regardless.
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      12-28-2012, 07:37 PM   #3
aph335i
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Okay so it's basically just for the code? Does it effect performance to NOT have it? I'm going to get it regardless, just curious.
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      12-29-2012, 09:05 AM   #4
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I just got some DP's installed. Now my " Service engine soon " light is on. How do I fix this ? I'm not exactly sure what the DP fix is ...
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      12-29-2012, 09:11 AM   #5
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DP fix is a generic term given to any item that automatically deletes the emission code that pops up when you eliminate the cats in the DPs. Any of the big name tunes can do it. If you do not want a tune, a stand alone module can be bought here.

http://www.burgertuning.com/dpfix.html

But if you are getting downpipes ... Just get a tune!
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      12-29-2012, 12:32 PM   #6
Bimmer Barney
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You need to get rid of the code one way or another. Otherwise the DME thinks there's an issue and may pull timing,fuel,etc
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      12-29-2012, 12:34 PM   #7
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Quote:
Originally Posted by Bimmer Barney View Post
You need to get rid of the code one way or another. Otherwise the DME thinks there's an issue and may pull timing,fuel,etc
It won't do this. The car will only throw Cat codes.

You need a tune to supress the code or a downpipe fix to pass emmissions OBD2 testing. You can also have just the DPFix if you don't want to tune your car to hide the codes.
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