need help with my new 240 BOV!!!

[dino619]

Im going to put a new BOV on my 240 once its done with the sr20det swap but I need some advice on how to get the part that keeps the bov "exposed" so you can hear it louder

[dino619]

is anyone here?

[480sx]

No one answered your question within 5 min so i dont think any ones here..

Your going to have to be more specific your question doesn't really make sense.

[dino619]

well they told me that the stock blow off valve is "recurculated into the sytem" I wanted it to blow out into the air if that makes sense. I dont know the wording of it

[dino619]

I am looking for something just like that pic here, is that your ride?

[adrianfromthecastle]

LOL... ricer...

depending on what BOV you go with, you'll need a hotpipe like so or just use your existing hotpipe and weld the bov flange on it..

[dino619]

I seen a different one at the shop, it was like a small piece of metal kind of like a upside down "t" shape and the BOV was just attached to the "t" area? have you seen this style before?whats the easiest way to convert my BOV anyways so it goes to the atmosphere

[adrianfromthecastle]

just weld it to your hot pipe... it aint bling, but it gets the job done

[s14kouki]

all aftermarket BOVs are atmospheric unless you find a way to recirculate it. Running atmospheric may make your car die if revs drop too quickly though. Just a heads up

[adrianfromthecastle]

all aftermarket BOVs are atmospheric unless you find a way to recirculate it. Running atmospheric may make your car die if revs drop too quickly though. Just a heads up

its also harmful to the environment...

[koukicody]

pipe down hippie!

[adrianfromthecastle]

pipe down hippie!

global warming FTL...

[jaytv1019]

You can not just run a open bov on a sr20 motor. It will work for about 15 minutes then your car will die everytime you come to a red light. You will also need to add SAFC to controll the deceleration air/fuel.

When you run a open bov you are releasing all the air out of the system. Which creates a super rich (a lot of extra fuel) condition. The air that you are just dumping out to atmosphere has allready been accounted for by your MAF. Your MAF then tells your computer how much fuel to add. If you release all of the air out of the system, what are you left with? A bunch of fuel that, when you come to a slow stop, will bog down the motor with all that extra fuel.

If you add a SAFC II or NEO, you can controll the amount of fuel that gets put into the motor when your RPM's drop -hence "decel air setting" or deceleration air/fuel.

[Bronze MFP]

You can always skip the SAFC and run a blow through MAF. if you run a blow through MAF (where the MAF is between the bov and the throttle body) then it will only see the true air entering the engine and wont be tricked into a rich condition when the bov vents.

[180fan]

op, you're in SD and yet you don't sweat the police? Quite frankly, the bov sound gets old and the police are just looking for folks trying to show off. All you'd be doing is drawing more negative attention at your other local 40 owners.

Run a recirc as everyone else has pointed out to avoid the idle bobbing/dying at the reds. IMO dying at a red is more embarrassing than having a quieter bov, esp when the guy next to you in heap starts snickering at you for dying at the red and you know they'll be thinking "what a noob loser."

VTA FTL...

[480sx]

How is dumping compressed air into the atmosphere harmful to the environment? I would think that a bov on the hotpipe would never be dumping out atomized fuel.. As that would be sucked into the engine under boost. Even after you shift, or let off the gas, air from the heads would have to be sucked all the way through the intercooler and out the bov... Please try to explain this to me, im pro-earth/atmosphere ^^.

[dino619]

well thanks alot for ALL the good advice! I just saw a couple out there and didnt really think it was all that big of a deal, seems like to many problems to even mess with it all, I dont even have an exhaust on my car cuz I dont want to get pulled over. I was just trying to make the blow off alittle louder thats all.

[adrianfromthecastle]

How is dumping compressed air into the atmosphere harmful to the environment? I would think that a bov on the hotpipe would never be dumping out atomized fuel.. As that would be sucked into the engine under boost. Even after you shift, or let off the gas, air from the heads would have to be sucked all the way through the intercooler and out the bov... Please try to explain this to me, im pro-earth/atmosphere ^^.

dammit, I spent the last 15 minutes looking for that thread that contained some article about vented blow off valves polluting the atmosphere... I'm not sure if I read it on this forum, or another Nissan forum. It's there somewhere...

[dino619]

I was just reading about spome guy you guys were getting on that wanted to fight everyone cuz you wouldnt go to his "go cart drift meet" funny **** man. so I also noticed your from covina, you know the guys at protomotoring?

[adrianfromthecastle]

protomotoring? nah, but I've heard of them... What part of Diego are you in? my cousin lives out there, he drives a grey s13 coupe w/ a black silvia front.

[dino619]

Really...? thats the saem thing I got going on right now. I got a 92' S13 coupe w/ a silvia front and sr20det in the shop right now. do you have any pics of his ride, that is a really nice setup. maybe he would know of some good spots here or even help me hold a get together.....(sorry no go kart tracks) LOL

[180fan]

VTA - you cause a momentary extra-rich condition and it dumps excess fuel out the back aka emissions ala HC.

[dino619]

I only under stood about half of that. I know now that it blows out all the air and leaves alot of fuel that doesnt get burned up which stals the car, I am new to the turbo scene, for some reason I have been into racing since high school but never really had the money or the time to REALLY get into it, now I do and I am having a blast, thanks again for the info. so there is no way to just make it a little louder or is that simply buying a new BOV?

[otterball21]

you really want to impress someone.. you tape a Turkey Call onto your BOV.... see what the guy at the light says.... and just smile and wave...

[180fan]

VTA - Vent To AtmosphereHC - HydroCarbons (you'll see this on emissions reports)

If you VTA, mafs based cars tend not to deal all that well with the lost air. It's expecting more, so dumps more fuel but doesn't have the air that was vented off hence the rich condition which can cause stalling.

On the other side of the engine, all that excess unburnt fuel passes out the other side to the air which we all breathe...

[dino619]

ya that really sucks, Im not into all that stuff, my lungs are bad enough from when I used to smoke. so is there a different BOV that I can just switch the stock one with? what is the stock SR20DET BOV anyways. good or bad?

[jaytv1019]

Dino, please don't listen to people calling you a ricer because like a particular thing about a car that someone else doesn't. That always pisses me off when other people want to tell others how to mod their car. For those warning you about Cali and the cops, well they may have a point. I live outside of Chicago so I couldn't say either way.

There are no rules when it comes to modifying cars, so have fun with it. If you want a louder bov noise that go for it! Yes, if you upgrade to a aftermarket bov, it will be louder even if you recirculate it (from my experiences).

You might want to look into Agency Power bov's. I bought their 50/50 design which gives you a couple more options. With this design, you can run 100% recirculation - 100% dump - or 50% dump with a 50% recirculation. I ran the 50/50 for a while but I still had some problems stalling the car out. Could of just been a seperate issue though. If it doesn't work for you, it can always be converted to a 100% recirc in like 20 secs.

Later,

[dino619]

so is there one that I can replace the stock BOV with that is recirculated so my car wont run rich or stall AND be alittle louder?

[adrianfromthecastle]

most BOV's have the option to recirculate... for example, you can change out the hks ssqv thingy to put on a recirculation hose. oh, and btw, my cousin I was talking about was jdotlim, but I guess you already found him in my California thread.

Dino, please don't listen to people calling you a ricer because like a particular thing about a car that someone else doesn't. That always pisses me off when other people want to tell others how to mod their car.

umm.... ok... thanks for you input?

[srpowered240sx]

its also harmful to the environment...

How is dumping compressed air into the atmosphere harmful to the environment? I would think that a bov on the hotpipe would never be dumping out atomized fuel.. As that would be sucked into the engine under boost. Even after you shift, or let off the gas, air from the heads would have to be sucked all the way through the intercooler and out the bov... Please try to explain this to me, im pro-earth/atmosphere ^^.

dammit, I spent the last 15 minutes looking for that thread that contained some article about vented blow off valves polluting the atmosphere... I'm not sure if I read it on this forum, or another Nissan forum. It's there somewhere...

i figured you were being saracastic. no way taking air from a filter, compressing it, then letting it into the atmosphere is harmful to the environment, you arent adding anything to the air except the trace amounts of oil the air picks up through the filter.

blow through kills mafs. i went through two learning that. you will need some sort of air correction to fix the slight stall venting open atmosphere.