Fix for exhaust code P0471? - Page 2 - Chrysler 300C Forum: 300C & SRT8 Forums
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post #11 of 17 (permalink) Old 04-28-2015, 11:17 AM
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Flowmaster Force 2 here. I've gotten the code under WOT. Intune cleared, has yet to reoccur.

"This car is 100% sh*ts and giggles."

2012 Chrysler 300 SRT8 // 6.4L Hemi // AFE Stage II CAI // Flowmaster Force II Cat-back // Diablo Tuned
2004 Dodge SRT-4// 2.4L Turbo // Sunrooof+Vipers // Mopar BOV
2005 PT Cruiser GT Convertible // 2.4L Turbo // Muffler Delete // Pillar-mount SRT Boost Gauge // Mopar BOV // Diablo Tuned

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post #12 of 17 (permalink) Old 05-13-2015, 03:21 PM
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That's odd, I have a stock exhaust and pulled this code a couple of days ago.
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post #13 of 17 (permalink) Old 05-18-2015, 12:40 PM
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Originally Posted by SPARTAA View Post
That's odd, I have a stock exhaust and pulled this code a couple of days ago.

Your OEM exhaust doors may be getting stuck open.

2012 300 SRT
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post #14 of 17 (permalink) Old 05-18-2015, 01:07 PM
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I pulled the stock muffler off my 2014 Ram 2500 with the 6.4L and saw the valve in the muffler there.

I replaced it with a Magnaflow muffler. It never threw a code.

Is the code due to a malfunctioning flapper valve or is it associated with no flapper valve present?

Michael
2006 300C SRT8
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post #15 of 17 (permalink) Old 09-14-2016, 11:29 AM
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Is there a way to stop these codes from popping CEL's with a Trinity? My car is tuned with the Trinity and I still get these codes all the time.

Corsa Xtreme Catback, deleted resos for straight pipe and the 93 tune are the only mods. I pop these codes quite frequently, and I even have the cheat tube that Corsa provided with the catback to mitigate these issues.

Any ideas?

2013 300 SRT8
2013 Charger SRT8 - SOLD
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post #16 of 17 (permalink) Old 09-23-2016, 03:13 PM
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Only way to get it to disappear permanently is have a CMR tune remove it.

It occasionally comes on under 2nd or 3rd gear pulls for me. Annoying as hell.
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post #17 of 17 (permalink) Old 04-12-2019, 02:01 PM
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I have this same issue after a Magnaflow install. Very annoying.
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