relocating blow off valve

[lunzee]

so I know that if you vent a blow off valve directly to atmosphere thar you will run rich because the maf doesn't know the air is gone. So what if I was to add a piece of hard piping to the Maf on the intake side the for the blow off valve to thar with the filter on the end of it? Would it stop running rich since the blow off valve is before the Mar? Would it still function correctly venting to atmosphere?

[Croustibat]

Please make a drawing.

You can either vent to atmos, or recirc (which is venting between turbo and MAF).

[lunzee]

Im already recirculating, I prefer venting to atmosphere but im trying to prevent running rich

[kikcaffine]

move the maf to after the intercooler before the throttle body then and you can vent it where ever. Or convert it to a MAP system. Either way.

[lunzee]

Where would I put it if im not running an intercooler?

[Kingtal0n]

as close to the compressor as possible is the recommended place

[lunzee]

Also do I need to move the maf to prevent running rich or can I just relocate the blow off valve?

[TheRealSy90]

so I know that if you vent a blow off valve directly to atmosphere thar you will run rich because the maf doesn't know the air is gone. So what if I was to add a piece of hard piping to the Maf on the intake side the for the blow off valve to thar with the filter on the end of it? Would it stop running rich since the blow off valve is before the Mar? Would it still function correctly venting to atmosphere?

Im already recirculating, I prefer venting to atmosphere but im trying to prevent running rich

Where would I put it if im not running an intercooler?

So, it's already recirculating, but you want to recirculate it somewhere else. You want it to run infront of the mafs instead of after where it is supposed to be. And you are not running an intercooler.

http://cf.chucklesnetwork.agj.co/items/1/4/6/5/0/not-sure-if-trolling-or-if-trolling.jpg

[jaysgottaredtop]

recirc ftw. anywhere between the maf and turbo will be fine. no more stuttering idle when you let off the throttle and drop into neutral.

step 1: 1" hose fittings on the BOV and inlet tube.

http://i499.photobucket.com/albums/rr353/jaysgottavtec/240sx/0503111433.jpg

step 2: 1" bendy radiator hose, and snake it around as needed.

http://i499.photobucket.com/albums/rr353/jaysgottavtec/240sx/0503111448.jpg

those are old shots, i need to take new pictures. all the IC piping is now black and the recirc line is better tucked away from view. but you get the idea.

[lunzee]

Its an 87 300zx no intercooler needed with what im running right now. And I don't want to recirculate, I want to vent to atmosphere with the stock ecm while preventing running rich

[TheRealSy90]

So you probably should have specified exactly what the vehicle is in the very first post don't you think? And what exactly is it that you are running?

[jr_ss]

Stop trying to be a ricer fan boi. It runs and works the way it is, all you want is the audible sound. So you're going to compromise the function for form.

My opinion, leave it alone. But since you most likely wont, because you want an audible blow off to scare people with, do as said, put the MAF after the turbo but as far away from the turbo as possible. The closer to the throttle body, the better, because there is less turbulent air there.

[jaysgottaredtop]

block off the BOV completely and just compressor surge at pedestrians. loud noises without the rich spots! the best of both worlds!! haha

[lunzee]

I don't see how venting to atmosphere makes Me a ricer fanboy, I want to vent to atmosphere, its not a useless 9 foot tall spoiler I just prefer the sound, people buy certain exhaust for different sounds and they create no large benefit. Same with putting any wheels on a car, you just like how it looks, and that's your opinion. So thanks for the opinion

[jaysgottaredtop]

quick run-down of the thread so far, for any possible new-comers:

so I know that if you vent a blow off valve directly to atmosphere thar you will run rich because the maf doesn't know the air is gone
1. you know for a fact that VTA (vent to atmosphere) blow-off valve setups run rich.


I don't want to recirculate, I want to vent to atmosphere
2. you want a VTA setup anyways.


So what if I was to [blah blah blah my explaination makes no sense]? Would it stop running rich since the blow off valve is before the Maf [srsly wtf, are you talking about a maf in the charge piping or wtf else]? Would it still function correctly venting to atmosphere?
3. you want suggestions on how to not run rich.


It runs and works the way it is, all you want is the audible sound. So you're going to compromise the function for form.

My opinion, leave it alone.
4. people back up your previously-stated fact (see point #1) and subsequently suggest that you not run a VTA setup (or at least not a weird hacked-up maf relocation to band-aid the issue).


I want to vent to atmosphere, its not a useless 9 foot tall spoiler I just prefer the sound, people buy certain exhaust for different sounds and they create no large benefit. Same with putting any wheels on a car, you just like how it looks, and that's your opinion. So thanks for the opinion
5. you see their suggestions (which are directly given from the same facts you provided yourself), you interpret their facts (subsequently your facts) as opinions, and you get mad.



...carry on :bigok:

[codyace]

Guys, let the ricer be a ricer. Vent to atmosphere, impress the underage girls at Taco Bell, and be the envy of all your ricer friends!


(Quite being a dolt and recirculate the BOV, no one in 2012 cares if they here your BOV or not...don't give up drivability for ricearoni)

[lunzee]

Do you guys not understand what im asking? Im already recirculating and I've vented to atmosphere before, im asking if there is anyway to run a vent to atmosphere and not run rich.

[blessedhellrider]

Do you guys not understand what im asking? Im already recirculating and I've vented to atmosphere before, im asking if there is anyway to run a vent to atmosphere and not run rich.

re-tune maybe?

[lunzee]

Possibly, im new to these cars so im pretty lost

[TheRealSy90]

Do you guys not understand what im asking? Im already recirculating and I've vented to atmosphere before, im asking if there is anyway to run a vent to atmosphere and not run rich.

move the maf to after the intercooler before the throttle body then and you can vent it where ever. Or convert it to a MAP system. Either way.

put the MAF after the turbo but as far away from the turbo as possible. The closer to the throttle body, the better, because there is less turbulent air there.


Are you a selective reader? Or just ignorant?

[Croustibat]

Its an 87 300zx no intercooler needed with what im running right now. And I don't want to recirculate, I want to vent to atmosphere with the stock ecm while preventing running rich

But you cant. It runs crap BECAUSE it vents to atmos.

Either run recirc and run it good, or vent to atmos and run like crap.

And get an intercooler. If theres a charger, there is power gain when fitting an intercooler.

[koukistylejdm]

THIS thread make my day!!!


quick run-down of the thread so far, for any possible new-comers:


1. you know for a fact that VTA (vent to atmosphere) blow-off valve setups run rich.



2. you want a VTA setup anyways.



3. you want suggestions on how to not run rich.



4. people back up your previously-stated fact (see point #1) and subsequently suggest that you not run a VTA setup (or at least not a weird hacked-up maf relocation to band-aid the issue).



5. you see their suggestions (which are directly given from the same facts you provided yourself), you interpret their facts (subsequently your facts) as opinions, and you get mad.



...carry on :bigok:

[lunzee]

Well im keeping my recircrecirculated set up. To much trouble and no benfit to attempt to vent to atmosphere while not running like shit. So thanks to the people that anwsered without thread shitting

[kikcaffine]

ugh I shouldnt tell you this but they do make bov's that are 50/50 and 75/25 for venting to the atmosphere/recirc. Your going to have to research which ones on your own though.

[lunzee]

Well its worth looking into but im pretty sure I will just keep recirculating. I was just looking for a change of pace, just something new that's not Jimmy rigged

[Drifting Kalamari]

Get a front mount intercooler for the cool looks and a good excuse to go ahead and relocate the MAF to near the TB while you are at it. THEN you can blow to atmosphere all you want! You get double the cool points, good noises, no stutters, and maybe some more HP!