o2 housing, vent or recirc?

[asd_gst]

i want to get a o2 housing the dumps to the atmosphere, but i'm kinda skeptical about it, which one is better honestly? to dump or to recirculate the o2 housing? I've been told that both ways are the best ways by different people, i was told that is you dump to the atm. then it will heat up your engine bay, then was told car will be faster if it is dumped to atmosphere... so please help me decide which to get for my car... its a 91 gst, all stock besides air filter hacked air can, and bcs removed, but im getting a 3" turbo back exhaust and walbro 190 fuel pump

 

[fwdmaster]

I would go with the recirculated route, I felt that when I had a o2 dump on my 14b setup it didnt do anything but sounded loud, just get a tubular o2 housing or port your stock one

 

[99dsmGST]

Since you are still preaty much stock go with the recirculate O2. Like posted above, either get a tubular o2 or port your stock one.

 

[asd_gst]

well i'm getting a 2g o2 housing with my 3" exhaust but im looking for the dump for future use i'm buying this for what i want my car to do down the road not right now, and yea i plan on getting a new manifold or porting mine, any easy ways to get manifold ported??? but yea i know it will be a lot louder one of my friends has a atmospheric dumped waste gate on his 420+hp integra, so i know all about the noise. but for bigger turbo, built motor with lots of other work going to be done looking for around 400-450 hp is what i want at the end of all the work.

 

[asd_gst]

I would go with the recirculated route, I felt that when I had a o2 dump on my 14b setup it didnt do anything but sounded loud, just get a tubular o2 housing or port your stock one

you felt what? and how much do you think it would cost to get a man. ported?

 

[gsxtasy]

Recirc'd, I'm f'in annoyed with my dump already.

 

[secondnature]

i want to get a o2 housing the dumps to the atmosphere, but i'm kinda skeptical about it, which one is better honestly? to dump or to recirculate the o2 housing? I've been told that both ways are the best ways by different people, i was told that is you dump to the atm. then it will heat up your engine bay, then was told car will be faster if it is dumped to atmosphere... so please help me decide which to get for my car... its a 91 gst, all stock besides air filter hacked air can, and bcs removed, but im getting a 3" turbo back exhaust and walbro 190 fuel pump

Its not going to make your car faster.It will help with boost creep.So many people say how its loud and they hate it.But its only loud when you get on it.If your car is a dd and you boost it everyday ,then yes i can see it being

 

[secondnature]

i want to get a o2 housing the dumps to the atmosphere, but i'm kinda skeptical about it, which one is better honestly? to dump or to recirculate the o2 housing? I've been told that both ways are the best ways by different people, i was told that is you dump to the atm. then it will heat up your engine bay, then was told car will be faster if it is dumped to atmosphere... so please help me decide which to get for my car... its a 91 gst, all stock besides air filter hacked air can, and bcs removed, but im getting a 3" turbo back exhaust and walbro 190 fuel pump

Its not going to make your car faster.It will help with boost creep.So many people say how its loud and they hate it.But its only loud when you get on it.If your car is a dd and you boost it everyday ,then yes i can see it being annoying.But if not then go with it. ITs really up to you.For someone that doesnt drive the car all the time then who cares.It just adds to the fun .

 

[92awddsm]

If your car is a dd and you boost it everyday ,then yes i can see it being

Coming from a person that usually runs an open dp or no dp at all and dd his car.

 

[secondnature]

oops! sorry about the second post! haha, hit the send key to early

 

[secondnature]

Coming from a person that usually runs an open dp or no dp at all and dd his car.

Hey what can i say i like to hear that turbo .People run when boost comes in hehe .You know what im talkin about keith.

 

[asd_gst]

ive drove plenty of loud cars, my 1st car was a honda crx, (hondas suck) but i had 21/2" exhaust with open headers for awhile it didnt really bother me it was loud, really loud, and I've road in a lot of old v8 cars like everyday for two years and they were all loud too, so noise wont be a problem for me

 

[dSmgs-T]

then go vented o2 if it wont bother, this way it will "cure" boost creep!

 

[asd_gst]

will it make the engine temp rise? since it will be dumping out of the engine bay?

 

[chavez408]

what kind of turbo are you going to be running

 

[1992awdlaser]

then go vented o2 if it wont bother, this way it will "cure" boost creep!

WRONG. It won't cure boost creep by itself. You will have to port the turbo to cure boost creep. When my car was stock I was running 15psi. I put my 3' Buschur exhaust on and the Buschur o2 dump. I go take it for a ride and the boost jumped up to 24psi. I could not get the boost lower than 21psi with a vacuum line straight to the wastegate actuator with no boost controller. This is due to not porting the turbo like I should have. When the car was like this I had to use around 80% throttle or less to keep it from hitting fuel cut or boosting too high.

So from my experiance I would say get the dumped one if you want the noise, but not for any other reasons. I don't see a dump making any more power on an internal gate mhi turbo. A dump has been proven to make 12-15 whp on bigger externally gated turbos though.

 

[dSmgs-T]

thats why i said "cure" cause it can be argued by everyone!

 

[secondnature]

WRONG. It won't cure boost creep by itself. You will have to port the turbo to cure boost creep. When my car was stock I was running 15psi. I put my 3' Buschur exhaust on and the Buschur o2 dump. I go take it for a ride and the boost jumped up to 24psi. I could not get the boost lower than 21psi with a vacuum line straight to the wastegate actuator with no boost controller. This is due to not porting the turbo like I should have. When the car was like this I had to use around 80% throttle or less to keep it from hitting fuel cut or boosting too high.

So from my experiance I would say get the dumped one if you want the noise, but not for any other reasons. I don't see a dump making any more power on an internal gate mhi turbo. A dump has been proven to make 12-15 whp on bigger externally gated turbos though.

Ok i have a dumb question.Hows having a dump going to make power even on a bigger turbo .Im just wondering ,because i didnt know that .And honestly dont see how.An externally gated turbo is to make sure the boost holds where you set it.As far as the dump helping with creep your right.If you dont port the turbo its not going to help .But if you do it will help .It helped me But i ported mine to 7cm too ,so that helped .

 

[1992awdlaser]

thats why i said "cure" cause it can be argued by everyone!

You should have said that it "could" instead of that it "will" then. Saying will means without a doubt it will fix the problem. Saying could means maybe it will fix it.

 

[1992awdlaser]

Ok i have a dumb question.Hows having a dump going to make power even on a bigger turbo .Im just wondering ,because i didnt know that .And honestly dont see how.An externally gated turbo is to make sure the boost holds where you set it.As far as the dump helping with creep your right.If you dont port the turbo its not going to help .But if you do it will help .It helped me But i ported mine to 7cm too ,so that helped .

Because when you recirculate an external gate 99% of the time it is going to create turbulance in the exhaust due to the angle the tube enters the exhaust at. This will create some back pressure which will take away a little power.

 

[secondnature]

Because when you recirculate an external gate 99% of the time it is going to create turbulance in the exhaust due to the angle the tube enters the exhaust at. This will create some back pressure which will take away a little power.

Yeah i knew that part .But couldnt see it making that much power? Lets put it this way.Your not going to be making any power with say a 16g i wouldnt guess.

 

[1992awdlaser]

Yeah i knew that part .But couldnt see it making that much power? Lets put it this way.Your not going to be making any power with say a 16g i wouldnt guess.

No not with a 16g. Not that power anyway. Maybe some if it was turned into an external gate off the manifold.

Buschur has tested this on 35r powered cars. So when I say a big turbo I mean bigger then a lot of people will ever need.

 

[secondnature]

No not with a 16g. Not that power anyway. Maybe some if it was turned into an external gate off the manifold.

Buschur has tested this on 35r powered cars. So when I say a big turbo I mean bigger then a lot of people will ever need.

haha Yeah .Thats what i was really meaning ,is that in the real world meaning as you say bigger then alot of people would go, i could see it making some power.But for what most guys run.I would say most likely not.Really what im trying to say is some people ask if its going to make power with a o2 dump or whatever. But to answer that question.Its not a power mod for say.Its for creep and some people like the sound of it .How does that sound? bad good eh maybe i dont know .Its more for the sound then anything.

 

[fwdmaster]

you felt what? and how much do you think it would cost to get a man. ported?

I mean when I had the o2 dump on I didn't gain any power but noise, it's different when you go external wastegate, you can find a ported 2g manifold for about $60-$100

 

[daren_p]

All personal preference & I wasn't a fan. My car is my DD'er in the summer, & was always looking around before I got into boost to see who was around me plus I just want a fan of the type of noise it made. I'd much rather hear my BB turbo at full spool vs a crappy sounding dump. So I had mine recirculated. Another reason why some say recirculated versions don't work as well is because with your typical recirculated O2 housing it dumps back in, right after the turbine wheel, creating turbulance. Now as to how much of an effect this would actually have in the real world, that I don't know. I had mine recirculated into the downpipe right before the bend at a nice angle that was more parallel with exhaust flow. I can say with my setup I didn't notice any decrease in performance or spool. Also, yes if your dump is into the engine bay it can create additional heat but I would think this effect to be pretty minimal & if your dump is abit lower then the bottom of the engine bay (which it should be), this shouldn't be an issue.