Active Autowerke BOV question [e92]

Infremo · 03-09-2017, 10:13 PM

Hey all,
So I just took my car to a shop and replaced my charge pipe and diverter valves to the Active Autowerke BOV combo. However, I am not sure if it's normal to hear a pff pff pff noise when I accelerate? Does this happen to anybody else? I asked the guy who installed it after if it was normal and he said it was but I wanted to confirm it with people on here

Thanks.
(N54 btw

)

krommmy · 03-10-2017, 01:26 AM

yes that's fine =] the more boost you build the louder the pfffff noise youll hear

limitdown · 03-10-2017, 03:21 AM

You should only get that noise after letting off the throttle. If you hear it while accelerating hard, then it's likely the CP's connections/clamps are not tight.
I've had this issue quite a few times. Hose slipped off, hose cracked at the clamp, high boost blew hose off.

BSM n54iS · 03-10-2017, 04:57 AM

Not while accelerating, but only after letting off the throttle

terryd5150 · 03-10-2017, 06:05 PM

Quote:

Originally Posted by BdSM n54iS

Not while accelerating, but only after letting off the throttle

^^ This. ^^

BOVs/DVs should be closed during acceleration.

They should open when you let off.

If they aren't, you're running the wrong spring, they're broken, or they're not installed properly.

You shouldn't be hearing them venting pressure under acceleration.

mike@x-ph.com · 03-10-2017, 07:13 PM

As mentioned you should only hear it when letting off throttle

Infremo · 03-11-2017, 02:03 PM

It's under hard acceleration when it makes that noise. Idk why the person who installed it said its normal... it feels like it's less powerful too. Dang not sure what to do but thanks everyone.

BSM n54iS · 03-11-2017, 09:49 PM

Sounds like you got a loose connection somewhere, either the cp to the throttle body, or the bov to the cp

DR-JEKL · 03-13-2017, 09:28 PM

I had a AA BOV the bloody rubber diaphragm had exploded...

Wasnt happy as It had bugger all use and they charge me a crazy amount of $ for a replacement (by memory 40usd shipped)

CanadianTSi · 03-13-2017, 10:07 PM

The AA blow off valve is adjustable. It could be set too soft and being blown open.

03-09-2017, 10:13 PM	#1
Infremo Enlisted Member 0 Rep 27 Posts Drives: 2014 335i M Sport Join Date: Jun 2016 Location: Florida iTrader: (0)	Active Autowerke BOV question [e92] Hey all, So I just took my car to a shop and replaced my charge pipe and diverter valves to the Active Autowerke BOV combo. However, I am not sure if it's normal to hear a pff pff pff noise when I accelerate? Does this happen to anybody else? I asked the guy who installed it after if it was normal and he said it was but I wanted to confirm it with people on here Thanks. (N54 btw ) Last edited by Infremo; 03-09-2017 at 10:21 PM..
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03-10-2017, 01:26 AM	#2
krommmy Second Lieutenant 29 Rep 295 Posts Drives: Mtreee Join Date: Aug 2015 Location: NY iTrader: (0)	yes that's fine =] the more boost you build the louder the pfffff noise youll hear
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03-10-2017, 03:21 AM	#3
limitdown First Lieutenant 187 Rep 337 Posts Drives: 2007 335i E93 Join Date: Jul 2015 Location: Location iTrader: (0)	You should only get that noise after letting off the throttle. If you hear it while accelerating hard, then it's likely the CP's connections/clamps are not tight. I've had this issue quite a few times. Hose slipped off, hose cracked at the clamp, high boost blew hose off.
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03-10-2017, 04:57 AM	#4
BSM n54iS Brigadier General 2683 Rep 4,203 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Not *while* accelerating, but only *after* letting off the throttle __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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03-10-2017, 07:13 PM	#6
mike@x-ph.com BimmerPost Supporting Vendor 27234 Rep 196,449 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	As mentioned you should only hear it when letting off throttle __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-11-2017, 02:03 PM	#7
Infremo Enlisted Member 0 Rep 27 Posts Drives: 2014 335i M Sport Join Date: Jun 2016 Location: Florida iTrader: (0)	It's under hard acceleration when it makes that noise. Idk why the person who installed it said its normal... it feels like it's less powerful too. Dang not sure what to do but thanks everyone.
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03-11-2017, 09:49 PM	#8
BSM n54iS Brigadier General 2683 Rep 4,203 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Sounds like you got a loose connection somewhere, either the cp to the throttle body, or the bov to the cp __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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03-13-2017, 09:28 PM	#9
DR-JEKL Major General 909 Rep 6,285 Posts Drives: Space Grey E92 335i 6MT Join Date: Jul 2012 Location: Newcastle Ozstraylia iTrader: (3)	I had a AA BOV the bloody rubber diaphragm had exploded... Wasnt happy as It had bugger all use and they charge me a crazy amount of $ for a replacement (by memory 40usd shipped)
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03-13-2017, 10:07 PM	#10
CanadianTSi Captain 207 Rep 607 Posts Drives: 2014 535 xDrive Diesel Join Date: Feb 2007 Location: Alberta iTrader: (0)	The AA blow off valve is adjustable. It could be set too soft and being blown open.
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