limp mode/misfires after xpipe and battery swap

M3NACE90 · 03-31-2018, 09:05 PM

hey everyone, went to swap my oem xpipe to pass inspection car battery happened to die before entering the shops garage, was pushed in oem xpipe swapped in then jumped and started but after a few minutes a bunch of codes came up limp mode/misfiring on cyl 1-4.
i replaced/registered the battery thinking it would go away but the problem persisted and even came up with p0171 and p152d codes, so now im not to sure if its electrical related or exhaust related...i read it could possibly be the metal ring gaskets that connect headers to x pipe but its only the second time ive swapped the x pipe...any ideas TIA

M3NACE90 · 04-07-2018, 01:49 PM

bump

111turbo · 04-11-2018, 10:15 PM

Did you notice anything with the gasket rings? Mine completely melted off. Replaced them and limp mode was taken care of for me due to exhaust leak.

yidgyi · 04-12-2018, 12:08 PM

Did you replace header to testpipe gasket with OEM? Anything but OEM gasket will cause misfires from what I've seen.

gillara · 02-03-2020, 02:11 AM

Did you fix this?

03-31-2018, 09:05 PM	#1
M3NACE90 Private First Class 24 Rep 124 Posts Drives: E90M3 Join Date: Oct 2015 Location: Long Island,NY iTrader: (0)	limp mode/misfires after xpipe and battery swap hey everyone, went to swap my oem xpipe to pass inspection car battery happened to die before entering the shops garage, was pushed in oem xpipe swapped in then jumped and started but after a few minutes a bunch of codes came up limp mode/misfiring on cyl 1-4. i replaced/registered the battery thinking it would go away but the problem persisted and even came up with p0171 and p152d codes, so now im not to sure if its electrical related or exhaust related...i read it could possibly be the metal ring gaskets that connect headers to x pipe but its only the second time ive swapped the x pipe...any ideas TIA
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04-07-2018, 01:49 PM	#2
M3NACE90 Private First Class 24 Rep 124 Posts Drives: E90M3 Join Date: Oct 2015 Location: Long Island,NY iTrader: (0)	bump
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04-11-2018, 10:15 PM	#3
111turbo Private First Class 81 Rep 130 Posts Drives: '12 e92 M3 Join Date: Jan 2015 Location: NY iTrader: (1)	Did you notice anything with the gasket rings? Mine completely melted off. Replaced them and limp mode was taken care of for me due to exhaust leak.
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04-12-2018, 12:08 PM	#4
yidgyi ///M 237 Rep 703 Posts Drives: 2013 E92 M3 ZCP Join Date: Oct 2015 Location: Northern VA iTrader: (0)	Did you replace header to testpipe gasket with OEM? Anything but OEM gasket will cause misfires from what I've seen. __________________ Follow me on IG: dre.pt
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02-03-2020, 02:11 AM	#5
gillara Private First Class 19 Rep 102 Posts Drives: 2011 E90 M3 Comp Join Date: Dec 2019 Location: Sacramento, California iTrader: (0)	Did you fix this?
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