So i have fitted my hks dump valves ( on hard pipes ) but they dont make any whooosh atall at first i thought it was becoz i didnt remove the recircs , so i have now removed them and bunged up the wholes . the only known mistake i did makke was i didnt bung up the small vacume pipe off the top of the recirc , i am going to do this tommorrow , but i cant see that stopping them making a noise !!!

 

here are a few pics . also wasnt to sure what vacume to T them into but am pretty sure i got it right >>

 

 

 

i removed one of them again to show the vac set up, both vacs of the valve go into a T , then the line takes them to the inlet

 

 

 

They'll need adjusting, so that they open correctly, they often do unless you get lucky with the factory settings.

 

Should be an adjustment bolt/nut at one end.

 

You want them to open when you lift off after building up a few psi of boost, but you dont want them opening under idle or will cause all sorts of stalling and idling issues.

Edited May 9, 201114 yr by Yowser

i looked for an adjustment skrew ,couldnt find one though . do i just need to open my eyes :)

ah, if its the SSQ version, then its dual chamber and has no adjustment.

 

I cant see your pictures, im currently on a shitty gprs connection, usually you would just use the vacumn pipe feed that the stock recircs use, but thats when fitting them in the stock recirc location where the vacumn pipe is right there.

Edited May 9, 201114 yr by Yowser

yeah mate , its hks super blow off , could using the wrong vacume line cause it to make no noise atall ?? surely there wud be something ?

My BOV's are very quiet too,

 

You can just about here them in a tunnel when being really aggressive with the throttle. Never BOVered me before :whistling:

 

You have tried it on the move though? Never heard mine while stationary..

get someone to drive pass you in it and listen out for it as the take there foot off the gas... i couldnt hear mine from the inside of the car but outside was ok, and stationary they dont make much of a noise when just revving , mine was an auto...

You need to just bung up all the holes and run bov-less :D Makes lots of whoosh :D

yeah I took the car for a spinner and was reving it out , trying all types of things to set them off , I even hung my head out the window but didnt get the slightest whoosh , the only thing I can think of is maybe the bungs poped out instanstly or that vacume line although wouldnt of thou gh t that wud make much difference , the other thing is they sit on the outside induction pipes , does that matter as most I have seen sit on the higher inside pipes ?

 

or are they just broke ;(

you could try HKS for instructions...

 

they look really old!!!

 

from the pic on here looks like you have them on right....

 

http://forums.nicoclub.com/old-gen-hks-bov-s-t395729.html

 

Edited May 9, 201114 yr by Medallion Man

all sorted now guys , was just the vacume needed blocking to my suprise