Car Hiccuping and Stalling

black_shadowM2 · 09-08-2016, 02:26 PM

Ive had the Jb4 Stage 2 and Catless Downpipes on my car for about 3 months now and Ive had mixed feelings about it. Whenever I turn on the car, the car "hiccups" in idle; sometimes high reving on its own past 1 and a half to stay on. In other instances I can be driving in the city and the car randomly stalls out( the car is automatic), turns off and shoots me right to neutral. Car has 7,3XX miles on it so I doubt spark plugs could be the problem. I have the following mods: ER Catless Downpipes, ER Chargepipe, BMS intake, MPE exhaust, and BMS JB4 stage 2. Any idea what could be wrong? My guess would be the JB4.

crbalch · 09-08-2016, 02:47 PM

Quote:

Originally Posted by Mem2dirty5

Ive had the Jb4 Stage 2 and Catless Downpipes on my car for about 3 months now and Ive had mixed feelings about it. Whenever I turn on the car, the car "hiccups" in idle; sometimes high reving on its own past 1 and a half to stay on. In other instances I can be driving in the city and the car randomly stalls out( the car is automatic), turns off and shoots me right to neutral. Car has 7,3XX miles on it so I doubt spark plugs could be the problem. I have the following mods: ER Catless Downpipes, ER Chargepipe, BMS intake, MPE exhaust, and BMS JB4 stage 2. Any idea what could be wrong? My guess would be the JB4.

Dunno man after my flash tune I did my plugs due to some misfires and now all is well. I only have 6k miles. Pull one out and take a look, or read the codes and see what you are getting, if anything.

pikcachu · 09-09-2016, 12:10 AM

I would take the intake out and see what happens...

seems like the intakes on these cars do a lot of vudu

XutvJet · 09-09-2016, 11:06 AM

Remove the intake.

Prazision · 09-12-2016, 11:28 AM

so, I also have that start-up hiccup with my flash tune, I talked to my tuner they also said intake. HOWEVER, today was cold out, and I had no issues, I would say take a look at your plugs first.

N55guy · 09-12-2016, 12:39 PM

It's free to remove the intake and check. Changing plugs will set you back ~$90. I'd take the intake out first then try plugs if it persists

2016F22xD · 09-12-2016, 12:48 PM

Remove BMS Intake or unplug your MAF. You are in Maryland, BMS intake doesn't like cold climates. I have similar situation, contacted Jon @ BMS and issues resolved with unplugging MAF.

FSociety · 09-13-2016, 07:56 AM

Quote:

Originally Posted by 2016F22xD

Remove BMS Intake or unplug your MAF. You are in Maryland, BMS intake doesn't like cold climates. I have similar situation, contacted Jon @ BMS and issues resolved with unplugging MAF.

Dont think its cold in Maryland yet lol but correct the BMS intake are hit or miss

jmwilson125 · 09-13-2016, 09:52 AM

Had something similar to this with a similar setup. Unplugged the maf and haven't had any issues since. Just make sure you are running up to date software.

RC Pilot · 01-12-2017, 09:49 PM

Doesn't the car need the MAF to adjust the fuel mixture properly???

bryan_G01 · 01-12-2017, 10:15 PM

could be plugs, coils, 7k miles is not alot if your on a tune and drive hard.

Any codes?

frenchfry675 · 03-17-2017, 05:58 PM

Quote:

Originally Posted by RC Pilot

Doesn't the car need the MAF to adjust the fuel mixture properly???

The jb4 takes care of it. I was hesitant at first myself but I've been unplugged for 6 months without the normal intake hiccups.

M2WOO35 · 03-17-2017, 06:45 PM

Make sure the clamp to secure the intake tubing is on tight enough and check for gaps. Had a similar situation on a friends F30 with BMS intake.

09-08-2016, 02:26 PM	#1
black_shadowM2 Private 20 Rep 50 Posts Drives: 2018 Black Shadow M2 Join Date: May 2016 Location: Washington, DC iTrader: (-1)	Car Hiccuping and Stalling Ive had the Jb4 Stage 2 and Catless Downpipes on my car for about 3 months now and Ive had mixed feelings about it. Whenever I turn on the car, the car "hiccups" in idle; sometimes high reving on its own past 1 and a half to stay on. In other instances I can be driving in the city and the car randomly stalls out( the car is automatic), turns off and shoots me right to neutral. Car has 7,3XX miles on it so I doubt spark plugs could be the problem. I have the following mods: ER Catless Downpipes, ER Chargepipe, BMS intake, MPE exhaust, and BMS JB4 stage 2. Any idea what could be wrong? My guess would be the JB4.
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09-09-2016, 12:10 AM	#3
pikcachu Major General 1399 Rep 5,262 Posts Drives: M235i (F22 Red angel) Join Date: Jul 2011 Location: undisclosed iTrader: (1)	I would take the intake out and see what happens... seems like the intakes on these cars do a lot of vudu
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09-09-2016, 11:06 AM	#4
XutvJet Major General 5551 Rep 5,369 Posts Drives: 2011 Cayman Base, 2016 M235 Join Date: Mar 2016 Location: Kansas City iTrader: (-1)	Remove the intake.
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09-12-2016, 11:28 AM	#5
Prazision Second Lieutenant 56 Rep 243 Posts Drives: 2011 BMW 328xi Wagon Join Date: Mar 2011 Location: NH iTrader: (1)	so, I also have that start-up hiccup with my flash tune, I talked to my tuner they also said intake. HOWEVER, today was cold out, and I had no issues, I would say take a look at your plugs first.
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09-12-2016, 12:39 PM	#6
N55guy First Lieutenant 214 Rep 356 Posts Drives: 2014 m235i Join Date: Feb 2013 Location: Lake Elsinore, CA iTrader: (3) Garage List 2014 BMW m235i [0.00]	It's free to remove the intake and check. Changing plugs will set you back ~$90. I'd take the intake out first then try plugs if it persists
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09-12-2016, 12:48 PM	#7
2016F22xD Enlisted Member 15 Rep 45 Posts Drives: 2016 M235i xDrive Join Date: Aug 2011 Location: Eastside / Seattle iTrader: (0)	Remove BMS Intake or unplug your MAF. You are in Maryland, BMS intake doesn't like cold climates. I have similar situation, contacted Jon @ BMS and issues resolved with unplugging MAF.
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09-13-2016, 09:52 AM	#9
jmwilson125 Major 341 Rep 1,184 Posts Drives: 2016 M235i Join Date: Feb 2015 Location: Somerville, Ma iTrader: (0)	Had something similar to this with a similar setup. Unplugged the maf and haven't had any issues since. Just make sure you are running up to date software.
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01-12-2017, 09:49 PM	#10
RC Pilot New Member 3 Rep 8 Posts Drives: 2015 M235i Join Date: Jan 2017 Location: SoCal iTrader: (0)	Doesn't the car need the MAF to adjust the fuel mixture properly???
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01-12-2017, 10:15 PM	#11
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	could be plugs, coils, 7k miles is not alot if your on a tune and drive hard. Any codes? __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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03-17-2017, 06:45 PM	#13
M2WOO35 Enlisted Member 15 Rep 37 Posts Drives: 2015 M235i Join Date: Dec 2015 Location: SoCal iTrader: (0)	Make sure the clamp to secure the intake tubing is on tight enough and check for gaps. Had a similar situation on a friends F30 with BMS intake.
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