i recently went from the stillen bov to the hks, how do i set the bov. at about 3,500rpm it starts to release air.

 

Is there a nut you can tighten anywhere on there? Bu thonestly i dont understand how the lugnut works. On my type rs theres a lugnut that is all the way down and if i untighten it i dont really see how that does anything, cause i cant see how it effects the bov, someone explain?>

 

yeh theres a threaded screw in the middle with a lock bolt. right now its half way and i can either screw it up or down. i didnt wanna mess with it till i find out which way i should turn it.

 

I don't think there is an adjuster on the HKS, at least I don't remember there being one when we put on on Sadler's car.

For the BOV's like Greddy or Apexi w/ the adjuster, it just adjusts the spring tension which affects the operation of the BOV. ie, loosen the tension and the BOV will open sooner, under less boost. Tighten it and it won't open as easily. ie, my wife and I both use Greddy Type S BOV's, but hers is set up to open pretty early, so it's loud. Mine can't be heard unless I hit full boost at 10 psi. Hers opens all the time at only 5 psi.

 

thanks shadow, i have the hks blitz super and it is adjustable. it releases at about 5 psi like you said so i will tighten it all the way down and start from there.

 

but i dont see how tighninh it down changes the spring rate......even if its half way up its just a lugnut it just sits there in the middle not controlling anything.....this is what i dont undersntand, so its either all the way down tight, or loose. its not like the middle section moves when the lugnut is loosened.

 

ill take pics today, and try it out, maybe it will make sens, cause im running it all the way down and im only running 4psi, and i can barely hear it cause it opens up about 1/4 of the way.

 

when you loosen the nut then you use a allen key to crew up or down the bolt, mine was half way preset when i brought it i just didnt know which way to turn to hold the boost.

 

Your not supposed to adjust an SSQV, if it is leaking it might be at the flange

 

In the Greddy Type S at least, there is a diaphram in there, and the adjustment screw affects that.

 

oh im supposed to screw that thing thats sticking outta the bov like 1 inch?

 

yeh i just did mine and it works, i screwed the middle bolt down with a allen key about 3/4 down and its holding the boost now. the nut is just a locknut so when you finish making adjustments tighten it back.

 

my screw is tightened all the way down and i have no probs

 

Keep an eye on that flange like mike said, those things are notorious for leaking at the O ring. I would loose a whole pound at full boost, nothing a little silicon can't fix.

 

well the kit comes with a good strong gasket plus i siliconed it. i noticed when i took the old one off there was barely sealant left and im sure something was leaking out from before.

 

of course you can adjust it. with the ssq bov you are going to get blower surge. When I had one I had it adjusted to there was about a 1/4 inch of thread left on the screw. Good throttle response but felt alittle more jerky while driving.

 

good to see u around C Max, your sig is off the hinges.

 

thanks mecca, i'll catch up to you soon.

 

Unless you plan on boosting more than 1bar, it's not a good idea to mess with adjustment screw on the HKS bov. Too tight of an adjustment could result in compressor surge. For this reason, the new HKS bov does not have the adjustment screw on them.

The GReddy type-s is the exact opposite. It requires some fine tuning depending on the amount of boost you're running. Unlike the HKS bov, the GReddy unit is push type and can be set to run either recirc or vta. The down side to GReddy unit is that it runs into problems when boosting over 1.5bar.

 

thanks for the info smoothmax, but i had no choice but to adjust mine. i was releasing boost at about 5-7 lbs and stillen (where i brought mine) said they are preset for stock s/c boost. i have a 9lb pully so i had to adjust it. after constant testing i have found the proper point and it's working fine.

 

doesnt the ssq have the option of having an adapted in which it can become recur?

 

yep it does

 

Just curious, do you guys with the HKS get a fluttering sound when it opens? I've heard clips of the bov on the net and none of them have a flutter, it's just a high pitched whistle. Under part throttle mine always flutters, and under full throttle it does a little bit, but it happens very quick.

 

mine isnt a flutter its more like air escaping (pssst), i think thats the air filter you hear because that does flutter when you release the gas

 

mine flutters

 

does it actually flutter at the bov itself or from inside the car. because mine is a solid stream of air but at the air filter it flutters.

 

I'm not sure if the bov actually flutters, when I rev it at idle it releases a steady strem of air. It just sounds like it flutters from inside the car, I was thinking if it could be compressor surge.

 

isn the hks ssqv SUPPOSED to sound like a flutter? like it releases air in a circle or something as opposed to out just one big hole....

cmax i have the same BOV as u and i might need to adjust it because i hardly hear my damn BOV, wtf....

that means i might be losing boost before it gets to the TB right? byt he time it comes back to be released out the BOV, there is hardly any charged air...so i have to tighten it probably....

my friend is running the same bov, 5psi turbo and u can hear is louder than mine at 10psi SC, ugh.....

 

it does both it just matters how the throttle is modulated and how much pressure is on the the charge pipe. @ high pressure its a steady stream but the lower pressure the more flutter sound you get. and the sound comes from the bov

 

its funny you say that because my boy just had his s/c installed and is pissed because his doesnt sound like mine, his is a flutter also. i dont know if its because his is older than mine because mine is brand new, we are both stumped. im gonna fiddle with his over the week end. mine sounds like a nice solid psssst. my exact model is the blitz super sound, it comes with a horn to make the psssst noise.