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Nordic335IM3 Nordic335IM3 is offline
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Default 08-10-2016, 01:43 PM

anyone with a solution to this?

its obnoxiously loud

does changing the bov spring to a lower rated one and/or tapping the
manifold with a bigger bov vacuum hose really work , as suggested by some?
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Torgus Torgus is offline
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Default 08-10-2016, 02:06 PM

I would try putting the correctly sized vac hose to the BOV. The stock line is too small per Tial specs.


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Nordic335IM3 Nordic335IM3 is offline
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Default 08-10-2016, 02:55 PM

Quote:
Originally Posted by Torgus
I would try putting the correctly sized vac hose to the BOV. The stock line is too small per Tial specs.
yes this is next on my list
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S.W.G. S.W.G. is offline
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Default 08-10-2016, 05:08 PM

Mine sounds very similar. I upgraded to a 1/4" hose and outlet as well.

https://www.youtube.com/watch?v=RITzLCv4WB0
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Beemin Beemin is offline
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Default 08-10-2016, 07:21 PM

I have the hotside aluminum inlets along with aluminum outlets and I get this sound with stock DVs venting to atmosphere.

Just like the OP's video, the high pitch sound happens a split second before the standard DV/blow off sound and mind sounds like it's coming from the passenger side. It's almost like the DV's can't release quick enough.

I'm going to try the 1/4 hose and barb to see if that helps.
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lightning lightning is offline
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Default 08-10-2016, 07:43 PM

to chime in, i'm running Pure turbos with VTT inlets and it sounds like that too! car have been running fine, 27PSI with no issues for around 10,000kms so i wouldn't be too bothered by it. logs look nice as well. I would say that the noise is probably just the character of the inlets.
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Nordic335IM3 Nordic335IM3 is offline
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Default 08-11-2016, 02:57 PM

https://www.youtube.com/watch?v=QYbf-SWsz14

I think its too loud.. the old pssss sound was better..
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Grunt Grunt is offline
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Default 01-01-2020, 06:41 PM

Quote:
Originally Posted by Nordic335IM3
https://www.youtube.com/watch?v=QYbf-SWsz14

I think its too loud.. the old pssss sound was better..
Thread revival, sorry......

I've been researching this since I put my inlets on a few months ago. I just found this thread and this video is exactly the sound I have that I do not like at all. MMP inlets on VRSF c.p. and Tial bov on custom tune at 22psi and all the other usual bolt ons. Has anyone found a cure for this possibly? Different spring than standard in the bov? Different bov?

Thanks!
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nyt nyt is offline
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Default 01-01-2020, 08:11 PM

Quote:
Originally Posted by Grunt
Thread revival, sorry......

I've been researching this since I put my inlets on a few months ago. I just found this thread and this video is exactly the sound I have that I do not like at all. MMP inlets on VRSF c.p. and Tial bov on custom tune at 22psi and all the other usual bolt ons. Has anyone found a cure for this possibly? Different spring than standard in the bov? Different bov?

Thanks!
I think it's a resonance from the silicone intake tubing and nothing you can do aside from running hard lines will fix it.


2010 335ix - speedtech 6466g2, cams, ported head, built bottom end, 7.5in hd ic, jb4, pi, fuel-it stg3, upgraded 6hp21+cooler, pr coils
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