HKS BOV

335ie90socal · 01-13-2008, 07:16 PM

I'm in need of some help. I just installed the HKS BOV kit from SP and I have a few questions. Is there a difference in when the blowoff valve activates if my car is an automatic? I don't seem to get the whoosh sound when I rev the engine like I see in videos of the BOV. I also don't get the whoosh sound when I drive, do I need to tweak it to make it louder? I have been driving for a day and I have not heard the whoosh sound yet. Does it sound like a install problem? Thanks for the input.

HyperM3 · 01-14-2008, 05:25 AM

When you are revving the car in park, are you revving it fast up to around 5-6k rpm?

Spool · 01-14-2008, 11:26 AM

Quote:

Originally Posted by 335ie90socal

I'm in need of some help. I just installed the HKS BOV kit from SP and I have a few questions. Is there a difference in when the blowoff valve activates if my car is an automatic? I don't seem to get the whoosh sound when I rev the engine like I see in videos of the BOV. I also don't get the whoosh sound when I drive, do I need to tweak it to make it louder? I have been driving for a day and I have not heard the whoosh sound yet. Does it sound like a install problem? Thanks for the input.

Not sure why you'd want to put it on an automatic in the first place. But there is no springs or tension screw to adjust the valve. The only way you hear it when you let off the throttle, try this, floor the car and then lift the foot off the pedal. When the throttle plate closes it'll ventilate back out to the BOV and you should hear it. If you don't hear it then you did something wrong

BoostedBMW · 01-14-2008, 12:15 PM

I'm not familiar with the autos, but you hooked up a vac source to it, right? I know it seems like a stupid question, but I just figured I would make sure.

LODOSS · 01-14-2008, 12:23 PM

Is it the HKS SEq BOV? if it is then you won't hear any whoosh.. its more like a sequence of chirping sound.

Even in an automatic you should hear it espeically if you are pushing it on the gas. everytime the car shifts it should release the pressure and of course when you let go the GAS.

Not sure what this comments means

"Not sure why you'd want to put it on an automatic in the first place"

You put it on there for the same reason as you would for a manual car.

01-13-2008, 07:16 PM	#1
335ie90socal Private First Class 3 Rep 142 Posts Drives: 07335i e90 Join Date: Sep 2007 Location: Malibu, CA iTrader: (0)	HKS BOV I'm in need of some help. I just installed the HKS BOV kit from SP and I have a few questions. Is there a difference in when the blowoff valve activates if my car is an automatic? I don't seem to get the whoosh sound when I rev the engine like I see in videos of the BOV. I also don't get the whoosh sound when I drive, do I need to tweak it to make it louder? I have been driving for a day and I have not heard the whoosh sound yet. Does it sound like a install problem? Thanks for the input.
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01-14-2008, 05:25 AM	#2
HyperM3 Too many Alex's, from now on, call me Beaufort 359 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	When you are revving the car in park, are you revving it fast up to around 5-6k rpm? __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
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01-14-2008, 12:15 PM	#4
BoostedBMW Moderator 134 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	I'm not familiar with the autos, but you hooked up a vac source to it, right? I know it seems like a stupid question, but I just figured I would make sure. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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01-14-2008, 12:23 PM	#5
LODOSS First Lieutenant 5 Rep 306 Posts Drives: AW 335 E92 Join Date: Jun 2007 Location: VA iTrader: (1)	Is it the HKS SEq BOV? if it is then you won't hear any whoosh.. its more like a sequence of chirping sound. Even in an automatic you should hear it espeically if you are pushing it on the gas. everytime the car shifts it should release the pressure and of course when you let go the GAS. Not sure what this comments means "Not sure why you'd want to put it on an automatic in the first place" You put it on there for the same reason as you would for a manual car.
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