Down piped installed today

Madnking · 02-11-2017, 06:57 PM

installed my down pipe yesterday with the help of a lift took me 2 hours plus.

2012 335i coupe m spec auto n55

exhaust is much louder and has a bit more power I am a happy man!

I did have something weird happen. I was rolling along about 40 and punched it and the car down shifted jerked real hard almost like a bang then limp mode. I restarted the car and its been fine for the past 300 miles driven hard. I have a Jb4 and intake I run map 5. Could this have something to do with lack of fuel? Or does the car need time to adapt to the down pipe? thanks

Welcome to NBA Jam · 02-11-2017, 07:01 PM

What's your charge pipe look like?

Madnking · 02-11-2017, 07:06 PM

I have a aftermarket charge pipe evolution I think

Madnking · 02-11-2017, 07:08 PM

its a bms charge pipe I inspected it with the car on the lift but not after the problem

Welcome to NBA Jam · 02-11-2017, 07:10 PM

Hmmm.... next thing would be to read the stored codes and see what they say. Do you think it might have to do with the downpipe gasket or v-clamps?

Do you think it may have been transmission related rather than downpipe?

Madnking · 02-11-2017, 07:16 PM

the bang and jerk felt like a tranny issue but I don't know sometimes if the engine jerks real hard it could seem like the tranny. I'm pretty sure the v clamp is tight and gaskets are good I checked and doubled check those. weird it hasn't done it again I did have traction control all the way off.

Madnking · 02-11-2017, 07:17 PM

if it happens again ill put her back on the lift how do I pull hidden codes?

Sample · 02-12-2017, 04:29 PM

since you have a jb4, do option 1/1 and it'll read codes.

Madnking · 02-14-2017, 11:44 AM

ok thanks I have the jb4 cable coming today!

sirdaft1 · 02-14-2017, 03:54 PM

To clarify, this loud noise happened, then limp mode. But after restarting the car, it runs 100% again without any issues?

Madnking · 02-14-2017, 07:59 PM

yes. got my cable today and no codes were found?

Sample · 02-14-2017, 08:54 PM

Maybe your jb4 is set to autoclear codes. You should disable that.

mike@x-ph.com · 02-15-2017, 07:21 PM

Quote:

Originally Posted by Sample

Maybe your jb4 is set to autoclear codes. You should disable that.

+1

Any time you get a CEL, you will have a code

Post a couple datalogs

daniel916 · 02-23-2017, 10:35 PM

I had the same problem i had jb4 an intake auto 09 with 80k traction off map 5 going 20mph stept on it rev high then pop went in to limp mode but i got codes tho it was my hpfp

STurnerXM2010 · 02-23-2017, 11:45 PM

Fuel... How did you reinstall your O2's? Unless tuned out, that is going to effect your trims pretty heavily. Running straight MHD flash, I had to reset alot of adaptations when I swapped my downpipe. There's more data than you realize that can be affected by the increase in exhaust flow. I think the JB4 tunes that O2 differential out though. If you can, reset the O2 sensors, O2 regulation, and (believe it or not) your throttle position sensor. After reset, give 'er hell for another 300 or so and she should even back out. In the meantime, decide when you will have time to install a Fuel-It Stage 1 or Stage 2... If you're anything like 80% of us on here, you're going to need it eventually.

K.M · 02-24-2017, 10:31 AM

Did the tranny go limp then catch after a high rev? MAY be something to do with the trans pan and mechatroncis sleeve. If you haven't done it, I recommend even if it isn't the cause of the problem, depending on your mileage.

02-11-2017, 06:57 PM	#1
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	Down piped installed today installed my down pipe yesterday with the help of a lift took me 2 hours plus. 2012 335i coupe m spec auto n55 exhaust is much louder and has a bit more power I am a happy man! I did have something weird happen. I was rolling along about 40 and punched it and the car down shifted jerked real hard almost like a bang then limp mode. I restarted the car and its been fine for the past 300 miles driven hard. I have a Jb4 and intake I run map 5. Could this have something to do with lack of fuel? Or does the car need time to adapt to the down pipe? thanks
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02-11-2017, 07:01 PM	#2
Welcome to NBA Jam Is it the shoes!? 3884 Rep 5,112 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	What's your charge pipe look like?
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02-11-2017, 07:06 PM	#3
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	I have a aftermarket charge pipe evolution I think
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02-11-2017, 07:08 PM	#4
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	its a bms charge pipe I inspected it with the car on the lift but not after the problem
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02-11-2017, 07:10 PM	#5
Welcome to NBA Jam Is it the shoes!? 3884 Rep 5,112 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	Hmmm.... next thing would be to read the stored codes and see what they say. Do you think it might have to do with the downpipe gasket or v-clamps? Do you think it may have been transmission related rather than downpipe?
	Appreciate 0 Quote

02-11-2017, 07:16 PM	#6
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	the bang and jerk felt like a tranny issue but I don't know sometimes if the engine jerks real hard it could seem like the tranny. I'm pretty sure the v clamp is tight and gaskets are good I checked and doubled check those. weird it hasn't done it again I did have traction control all the way off.
	Appreciate 0 Quote

02-11-2017, 07:17 PM	#7
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	if it happens again ill put her back on the lift how do I pull hidden codes?
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02-12-2017, 04:29 PM	#8
Sample Second Lieutenant 57 Rep 224 Posts Drives: E90 335i/G05 X5 xDrive40i Join Date: Apr 2011 Location: US iTrader: (6)	since you have a jb4, do option 1/1 and it'll read codes.
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02-14-2017, 11:44 AM	#9
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	ok thanks I have the jb4 cable coming today!
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02-14-2017, 03:54 PM	#10
sirdaft1 Brigadier General 2203 Rep 3,336 Posts Drives: X5 & E90 WTCC Widebody Racecar Join Date: Feb 2013 Location: Chicago West Burbs iTrader: (9) Garage List 2007 E90 WTCC Wideb ... [9.50] 2012 BMW X5 xDrive35i [9.00]	To clarify, this loud noise happened, then limp mode. But after restarting the car, it runs 100% again without any issues?
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02-14-2017, 07:59 PM	#11
Madnking Private 12 Rep 99 Posts Drives: 2012 335i coupes Join Date: Oct 2016 Location: Lower Delaware iTrader: (0) Garage List 2016 BMW M6 Gran C ... [0.00]	yes. got my cable today and no codes were found?
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02-14-2017, 08:54 PM	#12
Sample Second Lieutenant 57 Rep 224 Posts Drives: E90 335i/G05 X5 xDrive40i Join Date: Apr 2011 Location: US iTrader: (6)	Maybe your jb4 is set to autoclear codes. You should disable that.
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02-23-2017, 10:35 PM	#14
daniel916 New Member 0 Rep 5 Posts Drives: 2009 e90 Join Date: Aug 2016 Location: woodland ca iTrader: (0)	I had the same problem i had jb4 an intake auto 09 with 80k traction off map 5 going 20mph stept on it rev high then pop went in to limp mode but i got codes tho it was my hpfp
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02-23-2017, 11:45 PM	#15
STurnerXM2010 New Member 4 Rep 14 Posts Drives: 2012 335i E92 M-Sport Join Date: Apr 2015 Location: Frisco, TX iTrader: (0)	Fuel... How did you reinstall your O2's? Unless tuned out, that is going to effect your trims pretty heavily. Running straight MHD flash, I had to reset alot of adaptations when I swapped my downpipe. There's more data than you realize that can be affected by the increase in exhaust flow. I think the JB4 tunes that O2 differential out though. If you can, reset the O2 sensors, O2 regulation, and (believe it or not) your throttle position sensor. After reset, give 'er hell for another 300 or so and she should even back out. In the meantime, decide when you will have time to install a Fuel-It Stage 1 or Stage 2... If you're anything like 80% of us on here, you're going to need it eventually. __________________ 2012 E92 335i M-Sport w/M-Tech; 6MT, CDV upgrade, BMS Intake, BMS CP, N20 MAP (CP only), VRSF DP, Fuel-It Stage 1 LPFP, BMS oil cooler valve, fully adjustable M3 camber kit, MHD Flash, CF high kick spoiler, M4 black chrome grills, and much more to come...
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02-24-2017, 10:31 AM	#16
K.M New To All Of This 11 Rep 46 Posts Drives: '09 335i E92 Join Date: Jul 2015 Location: Colorado Springs iTrader: (0)	Did the tranny go limp then catch after a high rev? MAY be something to do with the trans pan and mechatroncis sleeve. If you haven't done it, I recommend even if it isn't the cause of the problem, depending on your mileage.
	Appreciate 0 Quote