N54 335IS, installed Downpipes, now throws codes

DrnknCamel · 05-02-2015, 12:10 AM

Hey Guys, i have a quick question. Have been running Cobb Tune no issues. Today i installed downpipes, ran fine for 30-45 minutes. Then threw 2 codes:

P2ABC - Boost Vaccum Electric
P3100 - Limp Mode

I have been searching for well over an hour, cant seem to find anyone with the same exact issue. I had a mechanic install the downpipes cause i was slammed at work. But from what research i have done, doesnt seem to be related. I have seen a lot on the TMAP sensor, which is an option. Anyone have any suggestions. I cant clear the codes, as they come right back immediately within 3 sec of starting the engine.

BQTuning · 05-02-2015, 12:46 AM

Did you change to another OTS map that supports upgraded downpipes ?

That other code about boost vacuum you might need to clean both your MAP and TMAP sensors

amr_e90 · 05-02-2015, 08:24 AM

If he installed downpipes and you have a factory exhaust , check the vacuum hose for the exhaust flap in the rear . He might of forgot to put it back or ripped it off . Don't know if that will throw a code but id check that.

DrnknCamel · 05-02-2015, 08:27 AM

Well, i did try several maps. Stock, stage 1 and stage 2. Previous to installing this, my exhaust flap was rattleing, so i basicly did the golf tee mod.

amr_e90 · 05-02-2015, 08:29 AM

Ok but check the vacuum hose that goes to it . Ur exhaust is all one piece and some people remove the whOle exhaust to install downpipes

DrnknCamel · 05-02-2015, 08:30 AM

Oh, good idea, i will lay down and check it out. Would it be near the rear of the exhaust?

amr_e90 · 05-02-2015, 08:32 AM

Drivers rear

DrnknCamel · 05-02-2015, 08:32 AM

thanks, i see the pics, i just googled it. I will check it now.

DrnknCamel · 05-02-2015, 08:40 AM

yeah, vaccum line seemed to be in good condition and connected as it should be.

amr_e90 · 05-02-2015, 09:03 AM

Check the tmap sensor on your chargepipe might be loose

DrnknCamel · 05-02-2015, 09:47 AM

Ok, found the issues. It blew the factory charge pipe off. Broke the bracket that holds the charge pipe too. Guess i have to go and upgrade now.

PNWN54 · 05-05-2015, 11:40 AM

Would love to hear how this sounds. Post up some vids. I'm sure it sounds killer tho!

DrnknCamel · 05-09-2015, 01:01 PM

Ok, i will post some vids. Let me throw them up on Youtube or something.

PNWN54 · 05-13-2015, 06:13 PM

Looking forward to it. Does the 335is have secondary cats?

05-02-2015, 12:10 AM	#1
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	N54 335IS, installed Downpipes, now throws codes Hey Guys, i have a quick question. Have been running Cobb Tune no issues. Today i installed downpipes, ran fine for 30-45 minutes. Then threw 2 codes: P2ABC - Boost Vaccum Electric P3100 - Limp Mode I have been searching for well over an hour, cant seem to find anyone with the same exact issue. I had a mechanic install the downpipes cause i was slammed at work. But from what research i have done, doesnt seem to be related. I have seen a lot on the TMAP sensor, which is an option. Anyone have any suggestions. I cant clear the codes, as they come right back immediately within 3 sec of starting the engine.
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05-02-2015, 12:46 AM	#2
BQTuning Banned 483 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	Did you change to another OTS map that supports upgraded downpipes ? That other code about boost vacuum you might need to clean both your MAP and TMAP sensors
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05-02-2015, 08:24 AM	#3
amr_e90 Captain 216 Rep 803 Posts Drives: e90 335xi 6mt Join Date: Apr 2012 Location: boston,Ma iTrader: (2)	If he installed downpipes and you have a factory exhaust , check the vacuum hose for the exhaust flap in the rear . He might of forgot to put it back or ripped it off . Don't know if that will throw a code but id check that.
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05-02-2015, 08:27 AM	#4
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	Well, i did try several maps. Stock, stage 1 and stage 2. Previous to installing this, my exhaust flap was rattleing, so i basicly did the golf tee mod.
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05-02-2015, 08:29 AM	#5
amr_e90 Captain 216 Rep 803 Posts Drives: e90 335xi 6mt Join Date: Apr 2012 Location: boston,Ma iTrader: (2)	Ok but check the vacuum hose that goes to it . Ur exhaust is all one piece and some people remove the whOle exhaust to install downpipes
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05-02-2015, 08:30 AM	#6
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	Oh, good idea, i will lay down and check it out. Would it be near the rear of the exhaust?
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05-02-2015, 08:32 AM	#7
amr_e90 Captain 216 Rep 803 Posts Drives: e90 335xi 6mt Join Date: Apr 2012 Location: boston,Ma iTrader: (2)	Drivers rear
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05-02-2015, 08:40 AM	#9
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	yeah, vaccum line seemed to be in good condition and connected as it should be.
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05-02-2015, 09:03 AM	#10
amr_e90 Captain 216 Rep 803 Posts Drives: e90 335xi 6mt Join Date: Apr 2012 Location: boston,Ma iTrader: (2)	Check the tmap sensor on your chargepipe might be loose
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05-02-2015, 09:47 AM	#11
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	Ok, found the issues. It blew the factory charge pipe off. Broke the bracket that holds the charge pipe too. Guess i have to go and upgrade now.
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05-05-2015, 11:40 AM	#12
PNWN54 MR. Rocket 48 Rep 398 Posts Drives: 2010 E92 335i M-Sport Join Date: May 2013 Location: Portland, OR iTrader: (2) Garage List 2010 E92 BMW 335i [0.00]	Would love to hear how this sounds. Post up some vids. I'm sure it sounds killer tho!
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05-09-2015, 01:01 PM	#13
DrnknCamel Private 2 Rep 60 Posts Drives: 2011 BMW 335is Join Date: Jul 2014 Location: Macon, GA iTrader: (0)	Ok, i will post some vids. Let me throw them up on Youtube or something.
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05-13-2015, 06:13 PM	#14
PNWN54 MR. Rocket 48 Rep 398 Posts Drives: 2010 E92 335i M-Sport Join Date: May 2013 Location: Portland, OR iTrader: (2) Garage List 2010 E92 BMW 335i [0.00]	Looking forward to it. Does the 335is have secondary cats?
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