Hey guys...i realize im in the wrong forum, but im posting for a friend who doesnt have an acct yet. Please excuse me if i say anything retarded, as i know very little about these cars.

My friend just bought a 2002 WRX, MTX, bone stock. I believe its the base model if there is such a thing. A BOV is at the top of his list of desired mods. My question is, does the WRX have a BOV stock? Is it open atmosphere or recirculatory? If recirc, does the new one have to be recirc? will it screw up the MAS if you get an open atm.? I am just going by what i know about my own car, if you put an open atm. on a VR-4, it may have stalling issues because the MAS tells the ecu theres more air in the system than there really is, so a recirc. is recommended. Is it the same with a WRX?

Also, what BOV do you guys reccomend?

anyways, thanks guys. I will get my friend to get an acct of his own soon. Sry for post length.

BOV= stock

Recirc system.

New BOV does not have to be recirc, just make sure to do the mod correctly and reprogram ECU for best effect.

why is the first mod anyone wants to do a BOV??

do some research.. the stocker is FINE if you plan on keeping the stock turbo.. unles you're pushing 350+whp, a BOV is useless..

get some engine management first..

-Shane

he just wants something louder

Ricer boys....if it's loud it must be fast.

lol...nah he just wants something he can hear. Not like he's getting a fart-can or anything...

i will never understand y people want their cars to sound like a dirt bike???:lol:

louder, yes.. but it will cause some serious damage if you have no EM.. When he shifts and the pressure goes to zero, the car will run extremely lean.. the stock ECU does not compensate for the sudden loss of air/pressure..

-Shane

lol...nah he just wants something he can hear. Not like he's getting a fart-can or anything...

i will never understand y people want their cars to sound like a dirt bike???:lol:

I will never understand why people want to pay $100+ for a noise that makes their car run richer, rougher, and gain more attention from police. :lol:

To be completely correct, the WRX (base model is the 2.5rs...non-turbo) comes with a BPV (by pass valve). A BPV recirculates the air, a BOV is atmospheric

I will never understand why people want to pay $100+ for a noise that makes their car run richer, rougher, and gain more attention from police. :lol:

To be completely correct, the WRX (base model is the 2.5rs...non-turbo) comes with a BPV (by pass valve). A BPV recirculates the air, a BOV is atmospheric

indeed. ive got a similar stock setup. you can get a BOV which recirculates. I believe Blitz makes a recirc. kit for their BOVs, but I will research to make sure i am correct.

anyways, thanks guys, ive got the info i was looking for, and will recommend to my friend that, if he gets one, to make sure its recirc.

EDIT: Tomei, Apexi, GReddy, Blitz, and TurboXS all either make recirculating BOVs (AKA BPVs) or recirc. kits/adaptors for their BOVs

louder, yes.. but it will cause some serious damage if you have no EM.. When he shifts and the pressure goes to zero, the car will run extremely lean.. the stock ECU does not compensate for the sudden loss of air/pressure..

-Shane

Wow you're totally wrong lol
BOVs causing SERIOUS damage? I think not, of course it will take a bit of performance away between shifts and such but that is anything but serious to a car.

Also how do you figure it runs lean? it runs rich...

the only thing you are right about in your post is the last statement

yes you're right.. I meant rich, wrote lean..

as for causing damage.. yes, it can and it will, without proper EM.. I've seen this personally on numerous cars.. especially subaru's.. Granted.. this isn't a "throw a BOV in and your engine blows up".. it happens over time, sometimes long, sometimes short... but he can do what he wants, it's his car... :)

I CAN say that I have yet to hear issues from a 50/50 BOV.. The 100% atm ones are the ones that I've seen cause damage..

-Shane

if he wants more pppshhhht tell him to go with either the gfb or the worx...theyre both 50/50...on a stock car 100% atmospheric it'll run like ass...backfire which will risk causing damage to the turbo and it'll smoke from running rich, burn the bumper above the exhaust, etc....but since he sounds like a ricer i guess i could let you know that it will at times cause a flame to shoot out if he adds a catless exhaust....which i would hope he'd do because if he does add a 100% atmospheric bov with cats, the cats will have a very limited existance...

jason

I have the TurboSmart Dual Port BOV 50/50. I love it. Loud enough but not insane. No Idle or rich conditions. It routes into the stock recirculation, and vents threw the horn into the atmosphere for a well rounded sound and ride. Highly recomended. :grinyes:

take a look at Agency Power 50/50 by vivid racing. Its an excellent quality bov with great sound and is comparable to the gfb stealth.