whistle goes WOOOO! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

band1t85 · 05-18-2009, 08:30 PM

so i've got a rb25det, when its making boost in 3rd gear and sometimes in 4th I'll let of the throtle jus a lil bit and my hks ssqv bov makes a constant whistle....... WTF!?

alzahakar · 05-18-2009, 10:45 PM

Sounds like the BOV is letting boost leak past. Check to make sure it's operating smoothly.

cali_love · 05-18-2009, 10:59 PM

what brand is youre BOV

Mister.E · 05-19-2009, 12:27 AM

Quote:

Originally Posted by band1t85

so i've got a rb25det, when its making boost in 3rd gear and sometimes in 4th I'll let of the throtle jus a lil bit and my hks ssqv bov makes a constant whistle....... WTF!?

Quote:

Originally Posted by cali_love

what brand is youre BOV

WTF?

DDDsquad_s13panda · 05-19-2009, 12:43 AM

isnt that what the BOV suppose to do?.. when you let off the throttle alittle bit, ofcourse your not closing the TB all the way for all the pressure to get release in the atmosphere. so it gives it that whistle because some air escape and some of the pressure air get in the intake.

should be normal.. unless you loosing boost, but you didnt state it.

Aepharoh · 05-19-2009, 03:05 AM

i think it might be something with the vacuum because thats what controlles the bov.

05-18-2009, 08:30 PM	#1
band1t85 Join Date: Dec 2008 Location: rochester,MN Age: 35 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	whistle goes WOOOO! so i've got a rb25det, when its making boost in 3rd gear and sometimes in 4th I'll let of the throtle jus a lil bit and my hks ssqv bov makes a constant whistle....... WTF!?

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05-18-2009, 10:45 PM	#2
alzahakar Zilvia Member Join Date: Aug 2008 Location: San Antonio, TX Age: 39 Posts: 196 Trader Rating: (4) Feedback Score: 4 reviews	Sounds like the BOV is letting boost leak past. Check to make sure it's operating smoothly.

05-18-2009, 10:59 PM	#3
cali_love Zilvia Addict Join Date: May 2009 Location: 818 Posts: 708 Trader Rating: (1) Feedback Score: 1 reviews	what brand is youre BOV

05-19-2009, 12:43 AM	#5
DDDsquad_s13panda BANNED Join Date: Dec 2007 Location: Fontana, IE. Age: 34 Posts: 550 Trader Rating: (7) Feedback Score: 7 reviews	isnt that what the BOV suppose to do?.. when you let off the throttle alittle bit, ofcourse your not closing the TB all the way for all the pressure to get release in the atmosphere. so it gives it that whistle because some air escape and some of the pressure air get in the intake. should be normal.. unless you loosing boost, but you didnt state it.

05-19-2009, 03:05 AM	#6
Aepharoh Zilvia Member Join Date: May 2009 Location: Orange County Age: 34 Posts: 170 Trader Rating: (7) Feedback Score: 7 reviews	i think it might be something with the vacuum because thats what controlles the bov.