i hear the new Apexi is pretty good. but i want to hear from some people with first hand experience...

 

if you recirculate it, most will be pretty quiet

 

For now I'll say Tial. I have one and I can't hear it.

 

my 1g dsm bov isn't too loud.

 

yea the stock dsm bov arent that loud at all.

 

i would say tial.

 

the RFL hands down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">my 1g dsm bov isn't too loud.</TD></TR></TABLE>

How loud? Noticable? Does it vary depending on setup/boost level etc.? Or are all DSM 1g BOV's quiet in general?

 

i swapped teh hks on my car for a 1st gen dsm, i love it first time i got on it i could barely hear anything, i thought if forgot to run the vaccum line. You just hear a slight release of air...bov's are annoying IMO

 

My friends d16 running about 8psi with the DSM BOV just sounds like a louder rush of air. Probably wouldn't notice it if you weren't thinking about it.

 

thats a 2nd gen bypass valve in the pic. barely holds 12psi usually.

I have found the 1st gens to be slightly quieter than some of the aftermarket ones like the type S or ssqv but i would not call it quiet by any means, especially at any significant amount of boost.

The Tial 50 is one of the quietet I have ever heard. I run a vortec with a softer spring and it is also very quiet, quieter than my 1st gen DSM was.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">the RFL hands down.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bailhatch &raquo;</TD></TR><TR><TD CLASS="quote">thats a 2nd gen bypass valve in the pic. barely holds 12psi usually.</TD></TR></TABLE>

Yeah, wasn't sure, that's why I didn't specify. I do know that some folks crush theirs, and that one doesn't look very crushable Works fine for low boost situations though.

 

The 1st-Gen DSM BOV sounds like a person blowing air through their teeth, but louder. It is still quiet compared to most other BOVs, and it is designed to be recirculated.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gritsak &raquo;</TD></TR><TR><TD CLASS="quote">if you recirculate it, most will be pretty quiet</TD></TR></TABLE>

 

are there drawbacks to recirculating?

i will be running atleast 15lbs so i doubt a dsm will work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deckedlude &raquo;</TD></TR><TR><TD CLASS="quote">are there drawbacks to recirculating?

i will be running atleast 15lbs so i doubt a dsm will work</TD></TR></TABLE>

what do you mean? A 1g dsm will support 15lbs easy. My friend's 2g gst had a 1g dsm bov swapped on it and was pushing 18psi. So 1g dsm bov = good......2g dsm bov = bad.

 

yea i was refering to the 2g.

 

I have a DSM and on my car (with a 1G valve), it's quite audible when not recirculating (at 18psi), but when I recirculate, I don't hear a thing.

 

are there any pros/cons to recirculating?

 

Recirculating:

Pros: Does not cause problems with hot-wire MAF sensors.
Cons: No pssst.

 

the BlitZ DD with the SS "filter" on it. its more of a quiet "chuffff" sound.

i went back to the regular outlet as i kept forgetting my car was boosted. seriously.

 

I got the Apex Dual Chamber, I thought it was gonna be quiet, but it is pretty audible. It's not offensive or anything, but louder than I thought (hoped) it would be.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Deckedlude &raquo;</TD></TR><TR><TD CLASS="quote">are there any pros/cons to recirculating?</TD></TR></TABLE>

On a MAP car, there really isn't a need to recirc. except that it will help maintain spool inbetween shifts.

On a MAF car, there is a big difference. THe MAF accounts for all the air entering it and adds fuel accordingly. When some of that air is lost (through the BOV), there is too much fuel present and the motor stutters.

 

I have a cheap *** obx one from ebay.. Im running about 10psi through it and its not bad at all.. It has the sound of air rushing out which it is doing.. Alot of others have horns on them to change the sound and make it louder..