New Here And Need Help

[Hardballer]

Hey guys!

I´m new here amd first, I will introduce myself:

My name is Marco and I´m 27 years old. I own a 2001 Stagea 250t RS Four V. I live in Berlin, Germany and my NM35 is the first in Germany.

If you have any questions, you can ask me everytime. But please think of one thing: In Germany we´re 10 hours after you. ;-)

Here´s my first question:

I tried to vent my stock BOV to atmosphere. At some pics in this forum I´ve seen, that some of you build this way. But when I pull off the tube between BOV and air-filter, the engine runs very irregular and turns off a few seconds after I started it. So what have you done, that it works?! I´m going crazy...

Greets Marco

[lilcrash]

The engine won't run with out that plumb back pipe, vacuum sucks the bov open and it sucks in un metered air.

[Hardballer]

Sorry, but I don´t understand "un metered air". Does the engine / ecu know, if the pipe between BOV and air-filter is connected or not?!

And will it work with an aftermarket BOV? I´m looking for a GReddy Type S. But I definitly want to use it open and not recirculated.

Edited August 7, 2011 by Hardballer

[lilcrash]

The air that is being sucked in isn't going through the afm so it's unmetered. All atmo bov can make your car stall. I had mine atmo for a few weeks during my turbo upgrade, as long as you keep the throttle open it will run. I you really want the noise just keep you foot on the accelerator as soon as it starts.

Edit - expect much abuse on this forum. More then half the people on here will flame you for this thread.

Edited August 7, 2011 by lilcrash

[Hardballer]

Okay. So I have to connect the plumb back pipe on the BOV. That´s bad, because I think, the Stagea would sound really nice with a vented BOV. :-(

[Hardballer]

But why should anyone flame me for this thread? I don´t want to destroy my engine. That´s why I´m asking the people in this forum. Because in Germany there´s no NISSAN, with turbocharged petrol-engine anymore. The last of them was the Silvia S14, which is called in Germany 200SX with the SR20DET. And I can´t ask someone here.

[bigkevracer]

If you want the noise, why not just block it off all together?

In Australia it's illegal to vent to atmosphere, so I think you'll find most people on here have theirs plumbed back.

[lilcrash]

Some people on here just don't like the noise. I used to always run an atmo bov in my celica, and it worked fine because it was a map sensored ecu, with the Nissan stock ecus it runs an afm so they sometime stall, use more fuel and shoot more flames out the exhaust when you run an atmo bov, afaik running an atmo won't damage anything. If you do get an after market bov it will work aslong as the spring is strong enough to hold it shut at idle

Edit- as big kev said. You can always just unplug the vacuum line and have it flutter instead.

Edited August 7, 2011 by lilcrash

[ironpaw]

Hey guys!

I´m new here amd first, I will introduce myself:

My name is Marco and I´m 27 years old. I own a 2001 Stagea 250t RS Four V. I live in Berlin, Germany and my NM35 is the first in Germany.

If you have any questions, you can ask me everytime. But please think of one thing: In Germany we´re 10 hours after you. ;-)

Here´s my first question:

I tried to vent my stock BOV to atmosphere. At some pics in this forum I´ve seen, that some of you build this way. But when I pull off the tube between BOV and air-filter, the engine runs very irregular and turns off a few seconds after I started it. So what have you done, that it works?! I´m going crazy...

Greets Marco

I think there was another guy from Germany that has a M35 Stagea...Stefan or something...maybe u guys should meet up hehe.

As for the BOV I have no idea...all I know is the stock one works fine unless it's making farting noises.

[Hardballer]

@ bigkevracer:

Sorry, I didn´t know, that it is illegal to VTA. But if I block the BOV, it will flutter. And I don´t want the flutter, because it´s not so good for the turbine.

@ lilcrash:

I just love the atmo BOV sound. It makes the car sound more powerful. So you mean, if I map the ECU, the engine will run with a vented BOV?

[Hardballer]

@ ironpaw:

Mine makes the farting noise. That´s the reason, why I´m lookong for an aftermarket. And the other guy was Sasha and I bought his M35. But good that you remember! ;-)

[iamhe77]

Okay. So I have to connect the plumb back pipe on the BOV. That´s bad, because I think, the Stagea would sound really nice with a vented BOV. :-(

You can run the Greddy or Blitz bov's venting to atmosphere on an M35 without issue.

They both have kits that will bolt right on.

[Jetwreck]

@ ironpaw:

Mine makes the farting noise. That´s the reason, why I´m lookong for an aftermarket. And the other guy was Sasha and I bought his M35. But good that you remember! ;-)

Here are a couple of sites for you....just so that you know I can run up to 25PSI with no trouble on the stock BOV......it works very well for a standard item and is very specific to our car. Another thing to remember...Nissan designed the NM35 to not be modified so every move you make you will more than likely have a struggle with.

For mod info

http://www.m35stagea.info/forum/

and for a BOV that will work

http://www.importmonster.com.au/view?url=http://page3.auctions.yahoo.co.jp/jp/auction/c228981638&thumb=http://f4.auctions.c.yimg.jp/f07batchimg.auctions.yahoo.co.jp/users/7/1/9/8/id2003shop-thumb-1275012261623266.jpg&title=TRUST%20RZ%20NM35%20VQ25DET

[iamhe77]

and for a BOV that will work

http://www.importmonster.com.au/view?url=http://page3.auctions.yahoo.co.jp/jp/auction/c228981638&thumb=http://f4.auctions.c.yimg.jp/f07batchimg.auctions.yahoo.co.jp/users/7/1/9/8/id2003shop-thumb-1275012261623266.jpg&title=TRUST%20RZ%20NM35%20VQ25DET

Yep, but just a foot note the M35 kit doesn't have any piping. Just the bov and hoses.

That pic with the pipe is for another car

[scotty nm35]

There are aftermarket plumb back bov's you could use, otherwise you may need to run an Emanage Ultimate p1ggiback to stop the stalling. Have you tried putting a grub screw in the bypass hole under the bov?

[wolverine]

Here´s my first question:

I tried to vent my stock BOV to atmosphere. At some pics in this forum I´ve seen, that some of you build this way. But when I pull off the tube between BOV and air-filter, the engine runs very irregular and turns off a few seconds after I started it. So what have you done, that it works?! I´m going crazy...

You need to block off the plumb back hose, using something of similar diameter to the plumb back(eg. rubber stopper) and hose clamping it securely in place.

You are allowing a source of air after the MAF/AFM which is causing your stalling.

It may still stall on slowing to a stop but should run fine and idle ok.

[bigkevracer]

@ ironpaw:

Mine makes the farting noise. That´s the reason, why I´m lookong for an aftermarket. And the other guy was Sasha and I bought his M35. But good that you remember! ;-)

Mine's doing the same thing, so I know where you're coming from now

Just look for a replacement stock one, or there are some Nissan specific units from Greddy, Blitz and Turbosmart. I'm almost certainly going down the Turbosmart route to fix mine.

[KiwiRS4T]

Just to spell it out conservative old gits like me think its immature to want a noisy bov to draw attention to the fact that you have a turbo - especially when you are just being out - dragged by a Honda so recommend that you stay with the stock set up. However if you really want you will be able to fit an atmos bov and still keep your car running. The best way would be to fit an ecu that doesn't require an afm (E-Manage, F-Con) so that running is not affected but unless you are looking for big power down the road that's probably too expensive a way to go and there are other ways.

It is not illegal to vent your bov to atmosphere in New Zealand so may not be in Germany either.

BTW anyone tried moving the afm between the bov and the throttle body? Could be a bit of a mission on an VQ I guess.

[Hardballer]

Thank you guys! I will try to close the bypass hole in the stock bov first. But just when it works, I´ve to change the BOV in the near future. The farting sound is very annoying!

[wolverine]

Have you blocked off the plumb back hose?