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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning 228i stalling when warm after charge pipe and intercooler install

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      10-01-2015, 11:36 PM   #1
rodent47
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228i stalling when warm after charge pipe and intercooler install

Hey guys this is my first post so I apologize if this is posted in the wrong section, if it can be moved to the right section

Current mos list;
BMS stage 1 tune
Injen intake
Oil catch can
ER charge pipe
ER intercooler

So after I installed the ER charge pipe and ER intercooler I went on a test drive and first run the charge pipe hose came loose (t bolt clamp wasn't tight enough) so after I fixed it I went on a test drive, drove it normally in comfort mode and then in sport +, all seemed fine. After an hour I turned on my 228i (8-speed auto) to test drive again and put on some gas after but it kept stalling when turning it on and if I give it a little gas it wouldn't stall.

I put on a scanner and it gave me a pending code p0172 (system too rich bank 1)
Any ideas what it could be, it was fine before the intercooler and chargepipe

Only stalls when its warm.

Last edited by rodent47; 10-02-2015 at 11:50 AM..
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      10-02-2015, 04:35 AM   #2
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Lambda sensor problem ?
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      10-02-2015, 11:51 AM   #3
rodent47
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Update: it only stalls when its warm, turned it on in the morning and did not stall at start
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      10-03-2015, 02:42 AM   #4
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Could it also be that my BMS stage 1 isn't up to date? I bought it from some else and the previous owner did not include the USB cable so I have not been able to update since I bought it, which is almost a year ago.
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      10-03-2015, 10:50 AM   #5
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Your FMIC shouldn't have anything to do with this...did you accidently knock a sensor loose or pop a connection?
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      10-03-2015, 10:54 AM   #6
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Quote:
Originally Posted by OpenAir View Post
Your FMIC shouldn't have anything to do with this...did you accidently knock a sensor loose or pop a connection?
I don't think so, but last night I reconnected all the cables to make sure but still the same thing, also some times when i go on a green light it feels like it stutters
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      10-03-2015, 02:32 PM   #7
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Can you pull codes?
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      10-04-2015, 12:14 AM   #8
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Quote:
Originally Posted by OpenAir View Post
Can you pull codes?
Today I fixed an issue where the vacuum hose was not all the way in.
So the stalling went away when warm for now, but the car still shakes a little more than before and still pulling out the code p0172 system too rich bank 1
There is no CEL
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      10-04-2015, 12:27 AM   #9
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Also when I give it a little gas and let off there is a small clunk on the left side if the engine (facing the car)
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      10-04-2015, 04:48 AM   #10
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According to a topic a few lines away from yours, stuttering could be solved by using colder spark plugs ...
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      10-04-2015, 12:02 PM   #11
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Quote:
Originally Posted by B.a.f View Post
According to a topic a few lines away from yours, stuttering could be solved by using colder spark plugs ...
I guess I will give that a try tomorrow, thanks for letting me know hopefully this fixes the issue as I haven't been driving my 228i since the issue started around 5 days ago
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      10-28-2015, 02:34 PM   #12
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Try reinstalling the stock intake and see if that changes anything. I know several people with n55s experienced rough idling due to aftermarket intakes, might be the same with n20s.
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      11-11-2015, 07:44 PM   #13
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