exactly like the topic says,I cant hear my turbo spool up, and I caneven hear my bov release air, I am reallt bummed about it , does anyone know why I cant hear any of my turbo set up at all?I am running between 5-6psi and my car is an s4 TII. Please help, thanks guys.

-Matt

 

is it stock.

 

Well let's see...

for starters your turbo is not all that big, and won't make the sound a T66 would...

Second of all, the stock "BOV" is not really a BOV.... it just re-routes the turbo's air to before the AFM (the air box).

Why are you bummed out about not hearing a turbo??? That sounds pretty ghey if you ask me.

 

UH maybe stock BOV's are made of plastic and aren't suppose to be loud. You have to buy after market BOV's to hear it.

 

do this

1. tid mod (search) / put a cone filter on it.
2. get free flowing exhaust (search for best one)
3. get fcd so that it tricks your car into thinking it's lower boost than what it is so there is no fuel cut (search)
4. get a greddy type s bov
5. rewire your fuel pump and get a walbro (search on how to rewire)


by the time you do these things your car will be a hole lot faster and you will be able to hear your turbo and bov!!! (search is the key word)

 

well uh guys im not ****** stupid and I know uhh that the uhh stock blow off valve isnt a uhh blow off valve its a bypass valve, I bought an aftermarket turbo xs type h bov, along with a CAI and plugs and wires, so im not completely stock.

 

well u didn't say u have a aftermarket turbo... (although i guessed)
well on your blow off valve, there should be a screw or a bolt, try to find instructions online to see how to "tune" it...
my HKS SSQV blow off vavle has a small bolt, if i turn it tight, it will have a hiss sound.... if i turn it loose it will blow off like normal...

 

which would make more sound on 5-6psi of boost, loose or tight adjustments on the blow off valve?

 

loose

 

are you sure, I herd it was tight then loose I just want to make sure.

 

well on my bov if it is just finger tight that bastard is loud however if I screw it down it gets quiter. THis would only make sence because since you have the small amount of boost it won't take that much for the spring to open however if you stiffen it will take more boost to open it.

 

but it depends on how u want the sound to come out right? for HKS SSQV if i tighten it, shouldn't it make a hisssss sound and if u loosen it, it will make a chiiii sound....
i thought that if u have less boost, it is harder to make a chiiii sound since there is less compressed air, so harder to make it loud... correct me if i am wrong

 

I don't know man, you may be right I just know what mine does greddy type s

 

so with less boost are you saying it wont be loud at all, i have the turbo xs type h bov.

 

Do some of you even know what a BOV does? Or you just like the sound? It releases the air before it returns to the turbo which = bad. So basically the screws are going to adjust how easy it is for the BOV to release the air. Too tight and it wont release the air it needs to at the proper time. Too loose and it'll just be letting out air thats not doing anything. So to be loud when its supposed to, make sure to loosen it enough so it releases at the right time, but not too much.

 

well i found instructions regarding my blow off valve online

http://www.935motorsports.com/hksbov.htm

"The adjustment only affects the outside black valve, not the inside purple valve."

anyways, i know this is not your blow off valve, but i think if u are patient, go online, they should have product manuals or like this site i got off, which tells u what to do

 

ok good im glad you came, and lol its not just for the sound, i did buy it for the purpose it is intended for, I was just wondering how I could get a better sound out of it, ocelot how much shoul i adjust it when im running 5-6psi?