Engine BOV question

nope... u have to cut the spring on that bov... i have the same one... even on the stock sf bov... u need to cut the spring... problem is...

not enough load... and the bov spring is too strong... so cut a inch off... and try it again... but dont cut too much off... u've been warned...

I have the spring the shortest I can have it. When I try to make it shorter the piston doesn't close all the way at idle....(I cut it too short at first and had to put the washers in to make up for it)

A TurboXS RFL BOV it's probably the loudest on the market. If anyone knows of one louder let me know. It's not like high pitched annoying loud either. It's like agressively get the fuck out of the way loud.

BOV question

I've never got around to asking this. My BOV doesn't go off if I'm just sitting there reving it up. I've noticed that every one elses does. I have to be going down the road for it to. And I have a VERY loud BOV. Even if I put it in first and push in the clucth and rev it up it won't go off. It works PREFECT though while driving down the road. Anyone got any suggestions?

usu the vacuum when you rev and let off is enough to pull open the bov and make it release air, i guess your bov has a very strong spring. if it's adjustable try taking off some of the spring preload

usually you need very high revs to get it to open up in neutral, its normal.

my buddy with a gsr has the same problem and he found out that with his type of turbo setup he needs a load on it (needs to be moving) in order for it to go off....you might be in the same boat

that's funny...that's exactly WORD FOR WORD.....what I was just telling someone about my car....that it needs to have a load on it for the BOV to go off.

But I wonder what about my setup makes it like that.

what kind of BOV do you have? i want to get a ReALLY loud one.

You answered your own question. When you cut the spring you increased the spring rate making it stiffer. Cutting a spring doesn't make it softer. You in effect made the BOV harder to open so now the normal vacuum from revving it and letting off in neutral isn't enough to pull the piston. Get a longer softer spring and use the washers to stiffen it just enough so that you like it.

hey wut psi r u runnin at... thats might be the cause of the problem...

if ur not even hittin 7 psi or above... then ur not gonna get a nice sound... rlf starts to sound good at 10-12 psi and above... WHOOOSH....

at 7 its ok... whosh

at 3-6 its just... whewwww.....

thats with the spring cut and no spacers...

i called turboxs... they told me that cuttin the spring will help... but dont cut too much... or else ill have idle problems...

I think I'm running around 8....I haven't had many chances to to really push it to see what the needle reads because cops run around here like crazy.....but a couple times I did manage to make it to 8 psi in 4th gear and it wouldn't go passed 8, so 8 where I guess I'm at. it idles at around -20 is that around what you get to?

Oh btw...there's no problem with the sound...it's loud as hell and sounds great. I just can't get it to go off in neutral.

oh duh... in that case...

yea... u wont be able to get it off then... its in neutural...

theres no load...

then how do other people do it...I don't know if they're in neutral, but they just kind of rolling along super slow almost just sitting there and they can make there's go off...and I have a video clip of you just sitting there making yours go off.

oh that thing? i wouldnt consider that as lettin the bov go off... cuz it doesnt sound the same as it would.. when its "under load"

just rev, rev, rev... to 5-6.5k and it will go off... but not as loud as u want it

thanks all...

System Error, post some vids if u can bro ...

System, how come you're ignoring my posts, I answered your question:

When you cut the spring you increased the spring rate making it stiffer. Cutting a spring doesn't make it softer. You in effect made the BOV harder to open so now the normal vacuum from revving it and letting off in neutral isn't enough to pull the piston. Get a longer softer spring and use the washers to stiffen it just enough so that you like it.

I could make the BOV release air in neutral very easily just by revving it up a bit. I had an Apex-i dual chamber BOV, so it's possible that different BOV's behave differently.

Oh..I didn't ignore your posts..in fact I'm trying to get a new spring right now...lol