Can cold air intake cause problems?

mike@x-ph.com · 04-03-2018, 10:26 PM

Quote:

Originally Posted by F32/435i

I have the BMS Intake.....I would say 1 out of every 15 starts I get a 8 second rough idle. Really only on cold start.

Mike@x-ph.com Is this due to the slight difference in MAF sensor location, or is it a flow difference?

How would a tune fix this issue? AFR adjustments?

Get a JB4 and unplug MAF sensor to fix the issue

XutvJet · 04-03-2018, 10:46 PM

Or toss the intake in the trash.

AH32013 · 04-10-2018, 02:39 AM

Anyone install any of these intakes on an Activehybrid 3? Curious if anyone's running an Intake with or without issues. Would love to get one for that sound

zeyad.habeeb · 04-26-2019, 11:16 AM

Quote:

Originally Posted by 963mw

I've had my AFE Magnum intake (Open) for around 3 months now, not one problem. If it ever did cause any issues, I would have thrown it right away. I also don't believe in simply unplugging a sensor.

So do you recommend it?

zeyad.habeeb · 04-26-2019, 11:17 AM

Quote:

Originally Posted by Zeke_D20

I've had the AFE Stage 2 MagnumForce Intake (Pro 5r Oil) for over a month now with no problems at all. It's an open one and I thought it would give me issues but my 335 runs smooth with it and I left the MAF sensor plugged in. It looks great too.

How did it go later on? Any issues?

T_H_O_M_A_S · 04-26-2019, 11:59 AM

ive got a bms on the stock turbo , sound was pretty nice
then ive swapped to ps2 , and it became a horrible suction noise
so i went back to stock airfilter , silent and no more maf errors anymore

zeyad.habeeb · 10-13-2019, 08:53 PM

Quote:

Originally Posted by GTBrandon

Quote:

Originally Posted by maestro_grand

Can cold air intake cause engine issues or develop problems ? Also what would be really good One to buy?

My experience with the BMS intake (along with many others on the forums) was getting a CEL from the MAF sensor while driving. I also had a very rough start up on occasions, and uneven idle for a minute as the car searched for the proper idle after driving. These all seemed to be related to the MAF sensor, but in my opinion, I would rather leave all sensors connected to the engine as I cannot see a reason why they would be in place if there was not some sort of importance to them. The issues I experienced were all within a week of driving, and therefore I sold the intake and bought a K&N drop in filter. This is just my personal experience though. One tip, no offense to anyone on here, but take advice for buying parts from people who aren't trying to sell them to you, as there can be some slight biases.

So, are you saying it's fine to drive with the CEL on?

zeyad.habeeb · 11-27-2019, 12:01 PM

Quote:

Originally Posted by Zeke_D20

I've had the AFE Stage 2 MagnumForce Intake (Pro 5r Oil) for over a month now with no problems at all. It's an open one and I thought it would give me issues but my 335 runs smooth with it and I left the MAF sensor plugged in. It looks great too.

How long did you have it for?

Do you recommend it?

Seba77W · 12-02-2019, 10:23 PM

Quote:

Originally Posted by zeyad.habeeb

Quote:

Originally Posted by Zeke_D20

I've had the AFE Stage 2 MagnumForce Intake (Pro 5r Oil) for over a month now with no problems at all. It's an open one and I thought it would give me issues but my 335 runs smooth with it and I left the MAF sensor plugged in. It looks great too.

How long did you have it for?

Do you recommend it?

I've had my CTS Turbo intake on for over 2 years without one single CEL or any drivability problems. It's a great intake and not expensive. It sounds great as well. I would definitely recommend it.

Bmw doubles · 12-05-2019, 12:02 AM

I made a custom ram intake and moved the MAF sensor closer to the front of the car. Definitely causes air plausibility errors and lean conditions. It causes a rough idle when cold and has caused my car to stall. It requires coding and scaling the threshold of the sensors limits.

SimpleJack · 12-06-2019, 11:15 AM

Quote:

Originally Posted by mike@x-ph.com

If you have open face intake without a tune, you might experience a rough idle but it wont cause any engine damage

I've got the the BMS intake. I installed it 2 months ago on my DD. It's the only mod I have on my car currently. No CEL thus far, and the sound is awesome, but I too, get a rough idle on cold start for 8-10 seconds.

My car isn't tuned yet, so hoping this goes away when I Go BM3 S2 next month with my bolt-on kit on its way.

mike@x-ph.com · 12-06-2019, 11:46 AM

Quote:

Originally Posted by SimpleJack

I've got the the BMS intake. I installed it 2 months ago on my DD. It's the only mod I have on my car currently. No CEL thus far, and the sound is awesome, but I too, get a rough idle on cold start for 8-10 seconds.

My car isn't tuned yet, so hoping this goes away when I Go BM3 S2 next month with my bolt-on kit on its way.

04-03-2018, 10:46 PM	#24
XutvJet Major General 5554 Rep 5,372 Posts Drives: 2011 Cayman Base, 2016 M235 Join Date: Mar 2016 Location: Kansas City iTrader: (-1)	Or toss the intake in the trash.
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04-10-2018, 02:39 AM	#25
AH32013 Enlisted Member 2 Rep 31 Posts Drives: Acivehybrid 3 Mineral White Join Date: Feb 2018 Location: Washington iTrader: (0)	Anyone install any of these intakes on an Activehybrid 3? Curious if anyone's running an Intake with or without issues. Would love to get one for that sound
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04-26-2019, 11:59 AM	#28
T_H_O_M_A_S Second Lieutenant 188 Rep 282 Posts Drives: M140i Join Date: Mar 2019 Location: Belgium iTrader: (0)	ive got a bms on the stock turbo , sound was pretty nice then ive swapped to ps2 , and it became a horrible suction noise so i went back to stock airfilter , silent and no more maf errors anymore __________________ M140i DP , OPF delete , MHD stg2 93oct , xhp stg3
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12-05-2019, 12:02 AM	#32
Bmw doubles Dream crusher 984 Rep 2,421 Posts Drives: Fast Join Date: Mar 2015 Location: westside iTrader: (0) Garage List 2011 535 [0.00]	I made a custom ram intake and moved the MAF sensor closer to the front of the car. Definitely causes air plausibility errors and lean conditions. It causes a rough idle when cold and has caused my car to stall. It requires coding and scaling the threshold of the sensors limits. Attached Images __________________ 535i MIssion Performance, PS2, Helix HPFP Kit, Wagner FMIC, Spec 3 clutch, Steel SMF, Wolf Racing CP, UUC SSK, GFB dv, SprintBooster, Custom Dynomax Exhaust, M5 Sways, Eibach OE Springs, Koni Sports Adjustable, Custom Short Ram CAI IG: @bmwdoubles
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