choosing a BOV

[mx6prober]

hey im new to turbo's and i now own my first force fed vehicle. I was wondering what the best way to choose a bov is. Amount of boost and what size turbo your running? or if there are other factors that go along with it. I know sound is one but having that out of the way lets say i just want it really loud. how should i go about finding one and then once i get one whats the best way to go about making a adapter plate for it assuming i cant find one to fit my car. its a 90 probe gt so no one cares to make anything. any help would be fantastic.

[EvoIX_MR2006]

hey im new to turbo's and i now own my first force fed vehicle. I was wondering what the best way to choose a bov is. Amount of boost and what size turbo your running? or if there are other factors that go along with it. I know sound is one but having that out of the way lets say i just want it really loud. how should i go about finding one and then once i get one whats the best way to go about making a adapter plate for it assuming i cant find one to fit my car. its a 90 probe gt so no one cares to make anything. any help would be fantastic.
I have been advised time and time again by members of the evo forums to remain with a re-circulating BOV until I switch over to a standalone. With that said, I know you have a stand alone, so I would wait until you do the switch before you begin your BOV research.

[dnace]

like was just said, be sure to calculate for the lost air in your intake. Most stock ECUs that run off MAF don't expect this air to be vented that is why to sty with a recirc. If you are going just for sound the blits SS is fun. The only real practical applications on most street cars is if you leak boost as in some dsm applications I have heard of stock recirc valves leaking. Other than that have at it I guess.

[mx6prober]

thanks for the advice. i think i will be putting it on in a few weeks. ordering a 255 walbro this weekend, put that beast in then replacing a few little gaskets cause i have some stupid oil leak near the back of the motor (actualy think its coming from my distributor base gasket). you think we can tune that ecu on our own at least a base tune? until i can get it to springfield or somewhere for a proper dyno tune

[mx6prober]

the stand alone has a maf delete so it wont be running one in a few weeks when im looking for a new bov. I did hear the blitz on my friends sr20det s14 and its pretty damn good sounding, very high pitch and delicous

[evoviiijeremy]

Check out this link. http://www.935motorsports.com/bovmediaX.htm

I have a greddy type s on mine. I like it.

[jvb6806]

Having a standalone has nothing to do with running a recirculating BOV VS an atmopheric BOV. what matters is where the intake air is metered. if it is metered in the intake manifold by a map sensor you can run an atmopheric BOV without running rich on shifts. even a MAFT will allow you to meter the air after the BOV if you want to. it is called a blow through set up.

so your standalone removes the maf. what stand alone are you running? if it is a AEM would assume you are going to run a 3bar map or something along those lines and tap it into the intake?

[digitalseance]

Get one from TurboXS

I recomend all their products. :)

[mx6prober]

the standalone is the megasquirt. i have the option of running the maf, what do you think?

[jdbeier38]

i havent EVER heard one bad thing about turboxs ... especially from subie dudes

[Temp_Me96]

I run the TurboXS RFL. This BOV sounds great especially if you like them loud but I would recommend getting an HKS SSQV it sounds great and works much better especially if your going to run high boost. Much easier to set and more reliable. Also much more expensive.

[jvb6806]

the standalone is the megasquirt. i have the option of running the maf, what do you think?

i have honestly never worked with a megasquirt... i have worked a little with the AEM EMS, openECU, and hand full of piggy back systems. if you do not run the factory MAF with the megasquirt i would assume that you would run a map sensor? if you can do that, that would be your best option. if you would like to run an atmospheric BOV you should find somewhere to meter the air after the BOV. again i say should. i ran an OPEN BOV on my DSM for years with no problems (thought i was washing out the MAF), i have an open BOV on the WRX (like that when i got it) and again i have had no problems. sure it runs rich on shifts but neither of them have sputtered or stalled on decel or at idle... so i didn't worry about it. some people have had problems and some haven't... depends on the car.

and as far as what BOV to buy if you want to be serious about your car as a performance vehicle the sound that the part makes should come in a distant second to it's performance. you need to find a BOV that will hold the level of boost you want to run w/o leaking and will allow you to recirc if you want to. typically good parts will give you the desired sound you are looking for.

e.i. ... free flowing exhaust = typically loud & and when you are rushing a high level of compressed air though a BOV you will get that loud sound you were looking for (higher the boost the stiffer the spring the louder the air).

if your factory BOV is plastic or can't hold a lot of boost and your target boost is under 20psi i would recommend the greddy type-S. i ran it on my DSM (recirced and none), you don't have to buy and adapter to recirc and it has two vacuum line attachments to prevent compressor surge (one on each side of the diaphragm).